diff --git a/app/models/category.rb b/app/models/category.rb
index 0efbb5f3ed8..7e7bd947b02 100644
--- a/app/models/category.rb
+++ b/app/models/category.rb
@@ -374,7 +374,7 @@ class Category < ActiveRecord::Base
       elsif SiteSetting.slug_generation_method == 'ascii' && !CGI.unescape(self.slug).ascii_only?
         errors.add(:slug, I18n.t("category.errors.slug_contains_non_ascii_chars"))
       elsif duplicate_slug?
-        errors.add(:slug, 'is already in use')
+        errors.add(:slug, I18n.t("category.errors.is_already_in_use"))
       end
     else
       # auto slug
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 73b0d3fe785..07b182b805e 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -697,6 +697,7 @@ en:
       disallowed_topic_tags: "This topic has tags not allowed by this category: '%{tags}'"
       disallowed_tags_generic: "This topic has disallowed tags."
       slug_contains_non_ascii_chars: "contains non-ascii characters"
+      is_already_in_use: "is already in use"
     cannot_delete:
       uncategorized: "This category is special. It is intended as a holding area for topics that have no category; it cannot be deleted."
       has_subcategories: "Can't delete this category because it has sub-categories."
diff --git a/plugins/chat/app/controllers/chat_controller.rb b/plugins/chat/app/controllers/chat_controller.rb
index e272188e720..3f78f15b8ef 100644
--- a/plugins/chat/app/controllers/chat_controller.rb
+++ b/plugins/chat/app/controllers/chat_controller.rb
@@ -352,6 +352,7 @@ class Chat::ChatController < Chat::ChatBaseController
           message: "chat.invitation_notification",
           chat_channel_id: @chat_channel.id,
           chat_channel_title: @chat_channel.title(user),
+          chat_channel_slug: @chat_channel.slug,
           invited_by_username: current_user.username,
         }
         data[:chat_message_id] = params[:chat_message_id] if params[:chat_message_id]
diff --git a/plugins/chat/app/jobs/regular/chat_notify_mentioned.rb b/plugins/chat/app/jobs/regular/chat_notify_mentioned.rb
index 523d3259f2f..d6fa48e3320 100644
--- a/plugins/chat/app/jobs/regular/chat_notify_mentioned.rb
+++ b/plugins/chat/app/jobs/regular/chat_notify_mentioned.rb
@@ -39,9 +39,10 @@ module Jobs
         is_direct_message_channel: @chat_channel.direct_message_channel?,
       }
 
-      data[:chat_channel_title] = @chat_channel.title(
-        membership.user,
-      ) unless @is_direct_message_channel
+      if !@is_direct_message_channel
+        data[:chat_channel_title] = @chat_channel.title(membership.user)
+        data[:chat_channel_slug] = @chat_channel.slug
+      end
 
       return data if identifier_type == :direct_mentions
 
@@ -64,8 +65,7 @@ module Jobs
         username: @creator.username,
         tag: Chat::ChatNotifier.push_notification_tag(:mention, @chat_channel.id),
         excerpt: @chat_message.push_notification_excerpt,
-        post_url:
-          "/chat/channel/#{@chat_channel.id}/#{@chat_channel.title(membership.user)}?messageId=#{@chat_message.id}",
+        post_url: "#{@chat_channel.relative_url}?messageId=#{@chat_message.id}",
       }
 
       translation_prefix =
diff --git a/plugins/chat/app/jobs/regular/chat_notify_watching.rb b/plugins/chat/app/jobs/regular/chat_notify_watching.rb
index c2c2cd8681e..e9b8805e88d 100644
--- a/plugins/chat/app/jobs/regular/chat_notify_watching.rb
+++ b/plugins/chat/app/jobs/regular/chat_notify_watching.rb
@@ -62,7 +62,7 @@ module Jobs
       payload = {
         username: @creator.username,
         notification_type: Notification.types[:chat_message],
-        post_url: "/chat/channel/#{@chat_channel.id}/#{@chat_channel.title(user)}",
+        post_url: @chat_channel.relative_url,
         translated_title: I18n.t(translation_key, translation_args),
         tag: Chat::ChatNotifier.push_notification_tag(:message, @chat_channel.id),
         excerpt: @chat_message.push_notification_excerpt,
diff --git a/plugins/chat/app/models/category_channel.rb b/plugins/chat/app/models/category_channel.rb
index 2a2a32246b4..e95c3d5cff8 100644
--- a/plugins/chat/app/models/category_channel.rb
+++ b/plugins/chat/app/models/category_channel.rb
@@ -21,7 +21,23 @@ class CategoryChannel < ChatChannel
     name.presence || category.name
   end
 
-  def slug
-    title.truncate(100).parameterize
+  def generate_auto_slug
+    return if self.slug.present?
+    self.slug = Slug.for(self.title.strip, "")
+    self.slug = "" if duplicate_slug?
+  end
+
+  def ensure_slug_ok
+    # if we don't unescape it first we strip the % from the encoded version
+    slug = SiteSetting.slug_generation_method == "encoded" ? CGI.unescape(self.slug) : self.slug
+    self.slug = Slug.for(slug, "", method: :encoded)
+
+    if self.slug.blank?
+      errors.add(:slug, :invalid)
+    elsif SiteSetting.slug_generation_method == "ascii" && !CGI.unescape(self.slug).ascii_only?
+      errors.add(:slug, I18n.t("chat.category_channel.errors.slug_contains_non_ascii_chars"))
+    elsif duplicate_slug?
+      errors.add(:slug, I18n.t("chat.category_channel.errors.is_already_in_use"))
+    end
   end
 end
diff --git a/plugins/chat/app/models/chat_channel.rb b/plugins/chat/app/models/chat_channel.rb
index bbcb53e0ae7..560ae2d322b 100644
--- a/plugins/chat/app/models/chat_channel.rb
+++ b/plugins/chat/app/models/chat_channel.rb
@@ -21,6 +21,8 @@ class ChatChannel < ActiveRecord::Base
             },
             presence: true,
             allow_nil: true
+  validate :ensure_slug_ok
+  before_validation :generate_auto_slug
 
   scope :public_channels,
         -> {
@@ -74,7 +76,11 @@ class ChatChannel < ActiveRecord::Base
   end
 
   def url
-    "#{Discourse.base_url}/chat/channel/#{self.id}/-"
+    "#{Discourse.base_url}#{relative_url}"
+  end
+
+  def relative_url
+    "/chat/channel/#{self.id}/#{self.slug || "-"}"
   end
 
   def public_channel_title
@@ -109,6 +115,10 @@ class ChatChannel < ActiveRecord::Base
 
     ChatPublisher.publish_channel_status(self)
   end
+
+  def duplicate_slug?
+    ChatChannel.where(slug: self.slug).where.not(id: self.id).any?
+  end
 end
 
 # == Schema Information
@@ -132,6 +142,7 @@ end
 #  auto_join_users         :boolean          default(FALSE), not null
 #  user_count_stale        :boolean          default(FALSE), not null
 #  slug                    :string
+#  type                    :string
 #
 # Indexes
 #
diff --git a/plugins/chat/app/models/direct_message_channel.rb b/plugins/chat/app/models/direct_message_channel.rb
index 69be58827a6..9d116643d7e 100644
--- a/plugins/chat/app/models/direct_message_channel.rb
+++ b/plugins/chat/app/models/direct_message_channel.rb
@@ -18,4 +18,12 @@ class DirectMessageChannel < ChatChannel
   def title(user)
     direct_message.chat_channel_title_for_user(self, user)
   end
+
+  def ensure_slug_ok
+    true
+  end
+
+  def generate_auto_slug
+    self.slug = nil
+  end
 end
diff --git a/plugins/chat/app/serializers/chat_channel_serializer.rb b/plugins/chat/app/serializers/chat_channel_serializer.rb
index 8bb24577697..6a194047f98 100644
--- a/plugins/chat/app/serializers/chat_channel_serializer.rb
+++ b/plugins/chat/app/serializers/chat_channel_serializer.rb
@@ -9,6 +9,7 @@ class ChatChannelSerializer < ApplicationSerializer
              :chatable_url,
              :description,
              :title,
+             :slug,
              :last_message_sent_at,
              :status,
              :archive_failed,
diff --git a/plugins/chat/assets/javascripts/discourse/initializers/chat-sidebar.js b/plugins/chat/assets/javascripts/discourse/initializers/chat-sidebar.js
index a523b2cea6b..a190e99a4b9 100644
--- a/plugins/chat/assets/javascripts/discourse/initializers/chat-sidebar.js
+++ b/plugins/chat/assets/javascripts/discourse/initializers/chat-sidebar.js
@@ -58,7 +58,7 @@ export default {
             }
 
             get name() {
-              return dasherize(slugifyChannel(this.title));
+              return dasherize(slugifyChannel(this.channel));
             }
 
             get classNames() {
@@ -72,7 +72,7 @@ export default {
             }
 
             get models() {
-              return [this.channel.id, slugifyChannel(this.title)];
+              return [this.channel.id, slugifyChannel(this.channel)];
             }
 
             get text() {
@@ -240,7 +240,7 @@ export default {
             }
 
             get name() {
-              return slugifyChannel(this.title);
+              return slugifyChannel(this.channel);
             }
 
             get classNames() {
@@ -254,7 +254,7 @@ export default {
             }
 
             get models() {
-              return [this.channel.id, slugifyChannel(this.title)];
+              return [this.channel.id, slugifyChannel(this.channel)];
             }
 
             get title() {
diff --git a/plugins/chat/assets/javascripts/discourse/initializers/chat-user-menu.js b/plugins/chat/assets/javascripts/discourse/initializers/chat-user-menu.js
index 192203a506a..62758b9b0c5 100644
--- a/plugins/chat/assets/javascripts/discourse/initializers/chat-user-menu.js
+++ b/plugins/chat/assets/javascripts/discourse/initializers/chat-user-menu.js
@@ -20,11 +20,15 @@ export default {
           (NotificationItemBase) => {
             return class extends NotificationItemBase {
               get linkHref() {
-                const title = this.notification.data.chat_channel_title
-                  ? slugifyChannel(this.notification.data.chat_channel_title)
-                  : "-";
-
-                return `/chat/channel/${this.notification.data.chat_channel_id}/${title}?messageId=${this.notification.data.chat_message_id}`;
+                const slug = slugifyChannel({
+                  title: this.notification.data.chat_channel_title,
+                  slug: this.notification.data.chat_channel_slug,
+                });
+                return `/chat/channel/${
+                  this.notification.data.chat_channel_id
+                }/${slug || "-"}?messageId=${
+                  this.notification.data.chat_message_id
+                }`;
               }
 
               get linkTitle() {
@@ -53,11 +57,15 @@ export default {
           (NotificationItemBase) => {
             return class extends NotificationItemBase {
               get linkHref() {
-                const title = this.notification.data.chat_channel_title
-                  ? slugifyChannel(this.notification.data.chat_channel_title)
-                  : "-";
-
-                return `/chat/channel/${this.notification.data.chat_channel_id}/${title}?messageId=${this.notification.data.chat_message_id}`;
+                const slug = slugifyChannel({
+                  title: this.notification.data.chat_channel_title,
+                  slug: this.notification.data.chat_channel_slug,
+                });
+                return `/chat/channel/${
+                  this.notification.data.chat_channel_id
+                }/${slug || "-"}?messageId=${
+                  this.notification.data.chat_message_id
+                }`;
               }
 
               get linkTitle() {
diff --git a/plugins/chat/assets/javascripts/discourse/lib/slugify-channel.js b/plugins/chat/assets/javascripts/discourse/lib/slugify-channel.js
index 885f9d11dea..f7a2734879e 100644
--- a/plugins/chat/assets/javascripts/discourse/lib/slugify-channel.js
+++ b/plugins/chat/assets/javascripts/discourse/lib/slugify-channel.js
@@ -1,8 +1,19 @@
 import { slugify } from "discourse/lib/utilities";
 
-export default function slugifyChannel(title) {
-  const slug = slugify(title);
-  return (
-    slug.length ? slug : title.trim().toLowerCase().replace(/\s|_+/g, "-")
+export default function slugifyChannel(channel) {
+  if (channel.slug) {
+    return channel.slug;
+  }
+  const slug = slugify(channel.escapedTitle || channel.title);
+  const resolvedSlug = (
+    slug.length
+      ? slug
+      : channel.title.trim().toLowerCase().replace(/\s|_+/g, "-")
   ).slice(0, 100);
+
+  if (!resolvedSlug) {
+    return "-";
+  }
+
+  return resolvedSlug;
 }
diff --git a/plugins/chat/assets/javascripts/discourse/routes/chat-channel.js b/plugins/chat/assets/javascripts/discourse/routes/chat-channel.js
index 97e42858d19..999870ac8a5 100644
--- a/plugins/chat/assets/javascripts/discourse/routes/chat-channel.js
+++ b/plugins/chat/assets/javascripts/discourse/routes/chat-channel.js
@@ -42,7 +42,7 @@ export default class ChatChannelRoute extends DiscourseRoute {
     this.chat.setActiveChannel(model?.chatChannel);
 
     const queryParams = this.paramsFor(this.routeName);
-    const slug = slugifyChannel(model.chatChannel.title);
+    const slug = slugifyChannel(model.chatChannel);
     if (queryParams?.channelTitle !== slug) {
       this.replaceWith("chat.channel.index", model.chatChannel.id, slug);
     }
diff --git a/plugins/chat/assets/javascripts/discourse/services/chat.js b/plugins/chat/assets/javascripts/discourse/services/chat.js
index af4925489b7..237e8328cf4 100644
--- a/plugins/chat/assets/javascripts/discourse/services/chat.js
+++ b/plugins/chat/assets/javascripts/discourse/services/chat.js
@@ -503,7 +503,7 @@ export default class Chat extends Service {
       return this.router.transitionTo(
         "chat.channel",
         response.id,
-        slugifyChannel(response.title),
+        slugifyChannel(response),
         { queryParams }
       );
     });
@@ -535,7 +535,7 @@ export default class Chat extends Service {
       return this.router.transitionTo(
         "chat.channel",
         channel.id,
-        slugifyChannel(channel.title),
+        slugifyChannel(channel),
         { queryParams }
       );
     } else {
diff --git a/plugins/chat/assets/javascripts/discourse/templates/chat-channel-info.hbs b/plugins/chat/assets/javascripts/discourse/templates/chat-channel-info.hbs
index 01f6cc80854..fc488396a5f 100644
--- a/plugins/chat/assets/javascripts/discourse/templates/chat-channel-info.hbs
+++ b/plugins/chat/assets/javascripts/discourse/templates/chat-channel-info.hbs
@@ -12,7 +12,7 @@
         @route="chat.channel"
         @models={{array
           this.model.chatChannel.id
-          (slugify-channel this.model.chatChannel.title)
+          (slugify-channel this.model.chatChannel)
         }}
         class="channel-info__back-btn"
       >
@@ -40,7 +40,7 @@
             @route={{concat "chat.channel.info." tab}}
             @models={{array
               this.model.chatChannel.id
-              (slugify-channel this.model.chatChannel.title)
+              (slugify-channel this.model.chatChannel)
             }}
             class="chat-tabs-list__link"
           >
diff --git a/plugins/chat/assets/javascripts/discourse/templates/components/chat-channel-card.hbs b/plugins/chat/assets/javascripts/discourse/templates/components/chat-channel-card.hbs
index 04be19f906b..411dc94ea38 100644
--- a/plugins/chat/assets/javascripts/discourse/templates/components/chat-channel-card.hbs
+++ b/plugins/chat/assets/javascripts/discourse/templates/components/chat-channel-card.hbs
@@ -10,7 +10,7 @@
     <div class="chat-channel-card__header">
       <LinkTo
         @route="chat.channel"
-        @models={{array this.channel.id (slugify-channel this.channel.title)}}
+        @models={{array this.channel.id (slugify-channel this.channel)}}
         class="chat-channel-card__name-container"
       >
         <span class="chat-channel-card__name">
@@ -27,7 +27,7 @@
             @route="chat.channel.info.settings"
             @models={{array
               this.channel.id
-              (slugify-channel this.channel.title)
+              (slugify-channel this.channel)
             }}
             class="chat-channel-card__tag -muted"
             tabindex="-1"
@@ -38,7 +38,7 @@
 
         <LinkTo
           @route="chat.channel.info.settings"
-          @models={{array this.channel.id (slugify-channel this.channel.title)}}
+          @models={{array this.channel.id (slugify-channel this.channel)}}
           class="chat-channel-card__setting"
           tabindex="-1"
         >
@@ -83,7 +83,7 @@
       {{#if (gt this.channel.membershipsCount 0)}}
         <LinkTo
           @route="chat.channel.info.members"
-          @models={{array this.channel.id (slugify-channel this.channel.title)}}
+          @models={{array this.channel.id (slugify-channel this.channel)}}
           class="chat-channel-card__members"
           tabindex="-1"
         >
diff --git a/plugins/chat/assets/javascripts/discourse/templates/components/chat-live-pane.hbs b/plugins/chat/assets/javascripts/discourse/templates/components/chat-live-pane.hbs
index f7c62611509..43ad2f6197a 100644
--- a/plugins/chat/assets/javascripts/discourse/templates/components/chat-live-pane.hbs
+++ b/plugins/chat/assets/javascripts/discourse/templates/components/chat-live-pane.hbs
@@ -10,7 +10,7 @@
         </div>
       {{/if}}
 
-      <LinkTo @route={{this.infoTabRoute}} @models={{array this.chatChannel.id (slugify-channel this.chatChannel.title)}} class="chat-full-page-header__title">
+      <LinkTo @route={{this.infoTabRoute}} @models={{array this.chatChannel.id (slugify-channel this.chatChannel)}} class="chat-full-page-header__title">
         <ChatChannelTitle @channel={{this.chatChannel}} />
       </LinkTo>
 
diff --git a/plugins/chat/assets/javascripts/discourse/templates/components/topic-chat-float.hbs b/plugins/chat/assets/javascripts/discourse/templates/components/topic-chat-float.hbs
index 58ec9d9a0cb..10af503050a 100644
--- a/plugins/chat/assets/javascripts/discourse/templates/components/topic-chat-float.hbs
+++ b/plugins/chat/assets/javascripts/discourse/templates/components/topic-chat-float.hbs
@@ -29,7 +29,7 @@
 
         {{#if this.chat.activeChannel}}
           {{#if this.expanded}}
-            <LinkTo @route={{this.infoTabRoute}} @models={{array this.chat.activeChannel.id (slugify-channel this.chat.activeChannel.title)}} class="topic-chat-drawer-header__title">
+            <LinkTo @route={{this.infoTabRoute}} @models={{array this.chat.activeChannel.id (slugify-channel this.chat.activeChannel)}} class="topic-chat-drawer-header__title">
               <div class="topic-chat-drawer-header__top-line">
                 <ChatChannelTitle @channel={{this.chat.activeChannel}} />
               </div>
diff --git a/plugins/chat/assets/javascripts/discourse/widgets/chat-invitation-notification-item.js b/plugins/chat/assets/javascripts/discourse/widgets/chat-invitation-notification-item.js
index 31d71168fe4..f9367adec4a 100644
--- a/plugins/chat/assets/javascripts/discourse/widgets/chat-invitation-notification-item.js
+++ b/plugins/chat/assets/javascripts/discourse/widgets/chat-invitation-notification-item.js
@@ -34,9 +34,12 @@ createWidgetFrom(DefaultNotificationItem, "chat-invitation-notification-item", {
   },
 
   url(data) {
-    const title = data.chat_channel_title
-      ? slugifyChannel(data.chat_channel_title)
-      : "-";
-    return `/chat/channel/${data.chat_channel_id}/${title}?messageId=${data.chat_message_id}`;
+    const slug = slugifyChannel({
+      title: data.chat_channel_title,
+      slug: data.chat_channel_slug,
+    });
+    return `/chat/channel/${data.chat_channel_id}/${slug || "-"}?messageId=${
+      data.chat_message_id
+    }`;
   },
 });
diff --git a/plugins/chat/assets/javascripts/discourse/widgets/chat-mention-notification-item.js b/plugins/chat/assets/javascripts/discourse/widgets/chat-mention-notification-item.js
index ea8c59cfde3..7d194879dc2 100644
--- a/plugins/chat/assets/javascripts/discourse/widgets/chat-mention-notification-item.js
+++ b/plugins/chat/assets/javascripts/discourse/widgets/chat-mention-notification-item.js
@@ -44,10 +44,13 @@ const chatNotificationItem = {
   },
 
   url(data) {
-    const title = data.chat_channel_title
-      ? slugifyChannel(data.chat_channel_title)
-      : "-";
-    return `/chat/channel/${data.chat_channel_id}/${title}?messageId=${data.chat_message_id}`;
+    const slug = slugifyChannel({
+      title: data.chat_channel_title,
+      slug: data.chat_channel_slug,
+    });
+    return `/chat/channel/${data.chat_channel_id}/${slug || "-"}?messageId=${
+      data.chat_message_id
+    }`;
   },
 };
 
diff --git a/plugins/chat/config/locales/server.en.yml b/plugins/chat/config/locales/server.en.yml
index 72d651f2ab2..ea2349f2b7f 100644
--- a/plugins/chat/config/locales/server.en.yml
+++ b/plugins/chat/config/locales/server.en.yml
@@ -107,6 +107,11 @@ en:
         multi_user: "%{users}"
         multi_user_truncated: "%{users} and %{leftover} others"
 
+    category_channel:
+      errors:
+        slug_contains_non_ascii_chars: "contains non-ascii characters"
+        is_already_in_use: "is already in use"
+
     bookmarkable:
       notification_title: "message in %{channel_name}"
 
diff --git a/plugins/chat/db/post_migrate/20221104054957_backfill_channel_slugs.rb b/plugins/chat/db/post_migrate/20221104054957_backfill_channel_slugs.rb
new file mode 100644
index 00000000000..0efcdec486f
--- /dev/null
+++ b/plugins/chat/db/post_migrate/20221104054957_backfill_channel_slugs.rb
@@ -0,0 +1,62 @@
+# frozen_string_literal: true
+
+class BackfillChannelSlugs < ActiveRecord::Migration[7.0]
+  def up
+    channels = DB.query(<<~SQL)
+      SELECT chat_channels.id, COALESCE(chat_channels.name, categories.name) AS title, NULL as slug
+      FROM chat_channels
+      INNER JOIN categories ON categories.id = chat_channels.chatable_id
+      WHERE chat_channels.chatable_type = 'Category' AND chat_channels.slug IS NULL
+    SQL
+    return if channels.count.zero?
+
+    DB.exec("CREATE TEMPORARY TABLE tmp_chat_channel_slugs(id int, slug text)")
+
+    taken_slugs = {}
+    channels.each do |channel|
+      # Simplified version of Slug.for generation that doesn't take into
+      # account different encodings to make things a little easier.
+      title = channel.title
+      if title.blank?
+        channel.slug = "channel-#{channel.id}"
+      else
+        channel.slug =
+          title
+            .downcase
+            .chomp
+            .tr("'", "")
+            .parameterize
+            .tr("_", "-")
+            .truncate(255, omission: "")
+            .squeeze("-")
+            .gsub(/\A-+|-+\z/, "")
+      end
+
+      # Deduplicate slugs with the channel IDs, we can always improve
+      # slugs later on.
+      channel.slug = "#{channel.slug}-#{channel.id}" if taken_slugs.key?(channel.slug)
+      taken_slugs[channel.slug] = true
+    end
+
+    values_to_insert =
+      channels.map { |channel| "(#{channel.id}, '#{PG::Connection.escape_string(channel.slug)}')" }
+
+    DB.exec(
+      "INSERT INTO tmp_chat_channel_slugs
+      VALUES #{values_to_insert.join(",\n")}",
+    )
+
+    DB.exec(<<~SQL)
+      UPDATE chat_channels cc
+      SET slug = tmp.slug
+      FROM tmp_chat_channel_slugs tmp
+      WHERE cc.id = tmp.id AND cc.slug IS NULL
+    SQL
+
+    DB.exec("DROP TABLE tmp_chat_channel_slugs(id int, slug text)")
+  end
+
+  def down
+    raise ActiveRecord::IrreversibleMigration
+  end
+end
diff --git a/plugins/chat/spec/fabricators/chat_fabricator.rb b/plugins/chat/spec/fabricators/chat_fabricator.rb
index 5a6f7f231dc..ee07f45022a 100644
--- a/plugins/chat/spec/fabricators/chat_fabricator.rb
+++ b/plugins/chat/spec/fabricators/chat_fabricator.rb
@@ -2,9 +2,22 @@
 
 Fabricator(:chat_channel) do
   name do
-    ["Gaming Lounge", "Music Lodge", "Random", "Politics", "Sports Center", "Kino Buffs"].sample
+    sequence(:name) do |n|
+      random_name = [
+        "Gaming Lounge",
+        "Music Lodge",
+        "Random",
+        "Politics",
+        "Sports Center",
+        "Kino Buffs",
+      ].sample
+      "#{random_name} #{n}"
+    end
   end
   chatable { Fabricate(:category) }
+  type do |attrs|
+    attrs[:chatable_type] == "Category" || attrs[:chatable]&.is_a?(Category) ? "CategoryChannel" : "DirectMessageChannel"
+  end
   status { :open }
 end
 
diff --git a/plugins/chat/spec/jobs/regular/chat_notify_mentioned_spec.rb b/plugins/chat/spec/jobs/regular/chat_notify_mentioned_spec.rb
index 0693f32ca61..32204adc9cd 100644
--- a/plugins/chat/spec/jobs/regular/chat_notify_mentioned_spec.rb
+++ b/plugins/chat/spec/jobs/regular/chat_notify_mentioned_spec.rb
@@ -215,7 +215,7 @@ describe Jobs::ChatNotifyMentioned do
       )
       expect(desktop_notification.data[:excerpt]).to eq(message.push_notification_excerpt)
       expect(desktop_notification.data[:post_url]).to eq(
-        "/chat/channel/#{public_channel.id}/#{expected_channel_title}?messageId=#{message.id}",
+        "/chat/channel/#{public_channel.id}/#{public_channel.slug}?messageId=#{message.id}",
       )
     end
 
@@ -230,7 +230,7 @@ describe Jobs::ChatNotifyMentioned do
           tag: Chat::ChatNotifier.push_notification_tag(:mention, public_channel.id),
           excerpt: message.push_notification_excerpt,
           post_url:
-            "/chat/channel/#{public_channel.id}/#{expected_channel_title}?messageId=#{message.id}",
+            "/chat/channel/#{public_channel.id}/#{public_channel.slug}?messageId=#{message.id}",
           translated_title: payload_translated_title,
         },
       )
@@ -259,6 +259,7 @@ describe Jobs::ChatNotifyMentioned do
       expect(data_hash[:mentioned_by_username]).to eq(user_1.username)
       expect(data_hash[:is_direct_message_channel]).to eq(false)
       expect(data_hash[:chat_channel_title]).to eq(expected_channel_title)
+      expect(data_hash[:chat_channel_slug]).to eq(public_channel.slug)
 
       chat_mention =
         ChatMention.where(notification: created_notification, user: user_2, chat_message: message)
diff --git a/plugins/chat/spec/jobs/regular/chat_notify_watching_spec.rb b/plugins/chat/spec/jobs/regular/chat_notify_watching_spec.rb
index b62a7a0573c..1690c3b0184 100644
--- a/plugins/chat/spec/jobs/regular/chat_notify_watching_spec.rb
+++ b/plugins/chat/spec/jobs/regular/chat_notify_watching_spec.rb
@@ -50,7 +50,13 @@ RSpec.describe Jobs::ChatNotifyWatching do
         {
           username: user1.username,
           notification_type: Notification.types[:chat_message],
-          post_url: "/chat/channel/#{channel.id}/#{channel.title(user2)}",
+          post_url: channel.relative_url,
+          translated_title:
+            I18n.t(
+              "discourse_push_notifications.popup.new_chat_message",
+              { username: user1.username, channel: channel.title(user2) },
+            ),
+          tag: Chat::ChatNotifier.push_notification_tag(:message, channel.id),
           excerpt: message.message,
         },
       )
@@ -81,7 +87,13 @@ RSpec.describe Jobs::ChatNotifyWatching do
             {
               username: user1.username,
               notification_type: Notification.types[:chat_message],
-              post_url: "/chat/channel/#{channel.id}/#{channel.title(user2)}",
+              post_url: channel.relative_url,
+              translated_title:
+                I18n.t(
+                  "discourse_push_notifications.popup.new_chat_message",
+                  { username: user1.username, channel: channel.title(user2) },
+                ),
+              tag: Chat::ChatNotifier.push_notification_tag(:message, channel.id),
               excerpt: message.message,
             },
           ),
@@ -176,7 +188,13 @@ RSpec.describe Jobs::ChatNotifyWatching do
         {
           username: user1.username,
           notification_type: Notification.types[:chat_message],
-          post_url: "/chat/channel/#{channel.id}/#{channel.title(user2)}",
+          post_url: channel.relative_url,
+          translated_title:
+            I18n.t(
+              "discourse_push_notifications.popup.new_direct_chat_message",
+              { username: user1.username, channel: channel.title(user2) },
+            ),
+          tag: Chat::ChatNotifier.push_notification_tag(:message, channel.id),
           excerpt: message.message,
         },
       )
@@ -207,7 +225,13 @@ RSpec.describe Jobs::ChatNotifyWatching do
             {
               username: user1.username,
               notification_type: Notification.types[:chat_message],
-              post_url: "/chat/channel/#{channel.id}/#{channel.title(user2)}",
+              post_url: channel.relative_url,
+              translated_title:
+                I18n.t(
+                  "discourse_push_notifications.popup.new_direct_chat_message",
+                  { username: user1.username, channel: channel.title(user2) },
+                ),
+              tag: Chat::ChatNotifier.push_notification_tag(:message, channel.id),
               excerpt: message.message,
             },
           ),
diff --git a/plugins/chat/spec/models/category_channel_spec.rb b/plugins/chat/spec/models/category_channel_spec.rb
index ad59b3efe91..89c950f5f7a 100644
--- a/plugins/chat/spec/models/category_channel_spec.rb
+++ b/plugins/chat/spec/models/category_channel_spec.rb
@@ -83,4 +83,70 @@ RSpec.describe CategoryChannel do
       end
     end
   end
+
+  describe "slug generation" do
+    subject(:channel) { Fabricate(:category_channel) }
+
+    context "when slug is not provided" do
+      before do
+        channel.slug = nil
+      end
+
+      it "uses channel name when present" do
+        channel.name = "Some Cool Stuff"
+        channel.validate!
+        expect(channel.slug).to eq("some-cool-stuff")
+      end
+
+      it "uses category name when present" do
+        channel.name = nil
+        channel.category.name = "some category stuff"
+        channel.validate!
+        expect(channel.slug).to eq("some-category-stuff")
+      end
+    end
+
+    context "when slug is provided" do
+      context "when using encoded slug generator" do
+        before do
+          SiteSetting.slug_generation_method = "encoded"
+          channel.slug = "测试"
+        end
+        after { SiteSetting.slug_generation_method = "ascii" }
+
+        it "creates a slug with the correct escaping" do
+          channel.validate!
+          expect(channel.slug).to eq("%E6%B5%8B%E8%AF%95")
+        end
+      end
+
+      context "when slug ends up blank" do
+        it "adds a validation error" do
+          channel.slug = "-"
+          channel.validate
+          expect(channel.errors.full_messages).to include("Slug is invalid")
+        end
+      end
+
+      context "when there is a duplicate slug" do
+        before { Fabricate(:category_channel, slug: "awesome-channel") }
+
+        it "adds a validation error" do
+          channel.slug = "awesome-channel"
+          channel.validate
+          expect(channel.errors.full_messages.first).to include(I18n.t("chat.category_channel.errors.is_already_in_use"))
+        end
+      end
+
+      context "if SiteSettings.slug_generation_method = ascii" do
+        before { SiteSetting.slug_generation_method = "ascii" }
+
+        it "fails if slug contains non-ascii characters" do
+          channel.slug = "sem-acentuação"
+          channel.validate
+          expect(channel.errors.full_messages.first).to match(/#{I18n.t("chat.category_channel.errors.slug_contains_non_ascii_chars")}/)
+        end
+      end
+    end
+  end
 end
diff --git a/plugins/chat/spec/models/chat_channel_spec.rb b/plugins/chat/spec/models/chat_channel_spec.rb
new file mode 100644
index 00000000000..475390a07a9
--- /dev/null
+++ b/plugins/chat/spec/models/chat_channel_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+RSpec.describe ChatChannel do
+  fab!(:category_channel) { Fabricate(:category_channel) }
+  fab!(:dm_channel) { Fabricate(:direct_message_channel) }
+
+  describe "#relative_url" do
+    context "when the slug is nil" do
+      it "uses a - instead" do
+        category_channel.slug = nil
+        expect(category_channel.relative_url).to eq("/chat/channel/#{category_channel.id}/-")
+      end
+    end
+
+    context "when the slug is not nil" do
+      before do
+        category_channel.update!(slug: "some-cool-channel")
+      end
+
+      it "includes the slug for the channel" do
+        expect(category_channel.relative_url).to eq("/chat/channel/#{category_channel.id}/some-cool-channel")
+      end
+    end
+  end
+end
diff --git a/plugins/chat/spec/models/direct_message_channel_spec.rb b/plugins/chat/spec/models/direct_message_channel_spec.rb
index 85674e858fb..227a143d60d 100644
--- a/plugins/chat/spec/models/direct_message_channel_spec.rb
+++ b/plugins/chat/spec/models/direct_message_channel_spec.rb
@@ -60,4 +60,14 @@ RSpec.describe DirectMessageChannel do
       expect(title).to eq("something")
     end
   end
+
+  describe "slug generation" do
+    subject(:channel) { Fabricate(:direct_message_channel) }
+
+    it "always sets the slug to nil for direct message channels" do
+      channel.name = "Cool Channel"
+      channel.validate!
+      expect(channel.slug).to eq(nil)
+    end
+  end
 end
diff --git a/plugins/chat/spec/requests/chat_channel_controller_spec.rb b/plugins/chat/spec/requests/chat_channel_controller_spec.rb
index f40a9ca0149..9e88a47f72f 100644
--- a/plugins/chat/spec/requests/chat_channel_controller_spec.rb
+++ b/plugins/chat/spec/requests/chat_channel_controller_spec.rb
@@ -305,7 +305,7 @@ RSpec.describe Chat::ChatChannelsController do
     it "errors when channel for category and same name already exists" do
       sign_in(admin)
       name = "beep boop hi"
-      ChatChannel.create!(chatable: category2, name: name)
+      category2.create_chat_channel!(name: name)
 
       put "/chat/chat_channels.json", params: { id: category2.id, name: name }
       expect(response.status).to eq(400)
@@ -313,7 +313,7 @@ RSpec.describe Chat::ChatChannelsController do
 
     it "creates a channel for category and if name is unique" do
       sign_in(admin)
-      ChatChannel.create!(chatable: category2, name: "this is a name")
+      category2.create_chat_channel!(name: "this is a name")
 
       expect {
         put "/chat/chat_channels.json", params: { id: category2.id, name: "Different name!" }
diff --git a/plugins/chat/spec/requests/chat_controller_spec.rb b/plugins/chat/spec/requests/chat_controller_spec.rb
index 78dc47157f8..ad42097db28 100644
--- a/plugins/chat/spec/requests/chat_controller_spec.rb
+++ b/plugins/chat/spec/requests/chat_controller_spec.rb
@@ -809,6 +809,7 @@ RSpec.describe Chat::ChatController do
               chat_message_id: msg.id,
               chat_channel_id: msg.chat_channel_id,
               chat_channel_title: msg.chat_channel.title(user),
+              chat_channel_slug: msg.chat_channel.slug,
               mentioned_by_username: sender.username,
             }.to_json,
           )
@@ -1029,6 +1030,10 @@ RSpec.describe Chat::ChatController do
       }.to change {
         user.notifications.where(notification_type: Notification.types[:chat_invitation]).count
       }.by(1)
+      notification = user.notifications.where(notification_type: Notification.types[:chat_invitation]).last
+      parsed_data = JSON.parse(notification[:data])
+      expect(parsed_data["chat_channel_title"]).to eq(chat_channel.title(user))
+      expect(parsed_data["chat_channel_slug"]).to eq(chat_channel.slug)
     end
 
     it "creates multiple invitations" do
diff --git a/plugins/chat/test/javascripts/chat-fixtures.js b/plugins/chat/test/javascripts/chat-fixtures.js
index 1877116d9f2..c8ab6151605 100644
--- a/plugins/chat/test/javascripts/chat-fixtures.js
+++ b/plugins/chat/test/javascripts/chat-fixtures.js
@@ -78,7 +78,7 @@ const chatables = {
   8: {
     id: 8,
     name: "Public category",
-    slug: "public_category",
+    slug: "public-category",
     posts_count: 1,
   },
   12: {
diff --git a/plugins/chat/test/javascripts/unit/lib/slugify-channel-test.js b/plugins/chat/test/javascripts/unit/lib/slugify-channel-test.js
index 52bd96830ef..9ce84b57ae3 100644
--- a/plugins/chat/test/javascripts/unit/lib/slugify-channel-test.js
+++ b/plugins/chat/test/javascripts/unit/lib/slugify-channel-test.js
@@ -2,20 +2,38 @@ import { module, test } from "qunit";
 import slugifyChannel from "discourse/plugins/chat/discourse/lib/slugify-channel";
 
 module("Discourse Chat | Unit | slugify-channel", function () {
-  test("defaults", function (assert) {
-    assert.equal(slugifyChannel("Foo bar"), "foo-bar");
+  test("defaults for title", function (assert) {
+    assert.equal(slugifyChannel({ title: "Foo bar" }), "foo-bar");
   });
 
-  test("a very long name", function (assert) {
+  test("a very long name for the title", function (assert) {
     const string =
       "xAq8l5ca2CtEToeMLe2pEr2VUGQBx3HPlxbkDExKrJHp4f7jCVw9id1EQv1N1lYMRdAIiZNnn94Kr0uU0iiEeVO4XkBVmpW8Mknmd";
 
-    assert.equal(slugifyChannel(string), string.toLowerCase().slice(0, -1));
+    assert.equal(
+      slugifyChannel({ title: string }),
+      string.toLowerCase().slice(0, -1)
+    );
   });
 
-  test("a cyrillic name", function (assert) {
+  test("a cyrillic name for the title", function (assert) {
     const string = "Русская литература и фольклор";
 
-    assert.equal(slugifyChannel(string), "русская-литература-и-фольклор");
+    assert.equal(
+      slugifyChannel({ title: string }),
+      "русская-литература-и-фольклор"
+    );
+  });
+
+  test("channel has escapedTitle", function (assert) {
+    assert.equal(slugifyChannel({ escapedTitle: "Foo bar" }), "foo-bar");
+  });
+
+  test("channel has slug and title", function (assert) {
+    assert.equal(
+      slugifyChannel({ title: "Foo bar", slug: "some-other-thing" }),
+      "some-other-thing",
+      "slug takes priority"
+    );
   });
 });
diff --git a/plugins/chat/test/javascripts/widgets/chat-invitation-notification-item-test.js b/plugins/chat/test/javascripts/widgets/chat-invitation-notification-item-test.js
index a5f561b2a0f..8e850d9f8ff 100644
--- a/plugins/chat/test/javascripts/widgets/chat-invitation-notification-item-test.js
+++ b/plugins/chat/test/javascripts/widgets/chat-invitation-notification-item-test.js
@@ -43,9 +43,9 @@ module(
       const data = this.args.data;
       assert.strictEqual(
         query(".chat-invitation a").getAttribute("href"),
-        `/chat/channel/${data.chat_channel_id}/${slugifyChannel(
-          data.chat_channel_title
-        )}?messageId=${data.chat_message_id}`
+        `/chat/channel/${data.chat_channel_id}/${slugifyChannel({
+          title: data.chat_channel_title,
+        })}?messageId=${data.chat_message_id}`
       );
     });
   }
diff --git a/plugins/chat/test/javascripts/widgets/chat-mention-notification-item-test.js b/plugins/chat/test/javascripts/widgets/chat-mention-notification-item-test.js
index d341e4ac8ce..65532c33b10 100644
--- a/plugins/chat/test/javascripts/widgets/chat-mention-notification-item-test.js
+++ b/plugins/chat/test/javascripts/widgets/chat-mention-notification-item-test.js
@@ -52,9 +52,9 @@ module(
 
       assert.strictEqual(
         query(".chat-invitation a").getAttribute("href"),
-        `/chat/channel/${data.chat_channel_id}/${slugifyChannel(
-          data.chat_channel_title
-        )}?messageId=${data.chat_message_id}`
+        `/chat/channel/${data.chat_channel_id}/${slugifyChannel({
+          title: data.chat_channel_title,
+        })}?messageId=${data.chat_message_id}`
       );
     });
   }
@@ -91,9 +91,9 @@ module(
 
       assert.strictEqual(
         query(".chat-invitation a").getAttribute("href"),
-        `/chat/channel/${data.chat_channel_id}/${slugifyChannel(
-          data.chat_channel_title
-        )}?messageId=${data.chat_message_id}`
+        `/chat/channel/${data.chat_channel_id}/${slugifyChannel({
+          title: data.chat_channel_title,
+        })}?messageId=${data.chat_message_id}`
       );
     });
   }
@@ -130,9 +130,9 @@ module(
 
       assert.strictEqual(
         query(".chat-invitation a").getAttribute("href"),
-        `/chat/channel/${data.chat_channel_id}/${slugifyChannel(
-          data.chat_channel_title
-        )}?messageId=${data.chat_message_id}`
+        `/chat/channel/${data.chat_channel_id}/${slugifyChannel({
+          title: data.chat_channel_title,
+        })}?messageId=${data.chat_message_id}`
       );
     });
   }