diff --git a/backend/open_webui/migrations/versions/2f1211949ecc_update_message_and_channel_member_table.py b/backend/open_webui/migrations/versions/2f1211949ecc_update_message_and_channel_member_table.py
new file mode 100644
index 0000000000..2d72583ebe
--- /dev/null
+++ b/backend/open_webui/migrations/versions/2f1211949ecc_update_message_and_channel_member_table.py
@@ -0,0 +1,103 @@
+"""Update messages and channel member table
+
+Revision ID: 2f1211949ecc
+Revises: 37f288994c47
+Create Date: 2025-11-27 03:07:56.200231
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+import open_webui.internal.db
+
+
+# revision identifiers, used by Alembic.
+revision: str = "2f1211949ecc"
+down_revision: Union[str, None] = "37f288994c47"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # New columns to be added to channel_member table
+    op.add_column("channel_member", sa.Column("status", sa.Text(), nullable=True))
+    op.add_column(
+        "channel_member",
+        sa.Column(
+            "is_active",
+            sa.Boolean(),
+            nullable=False,
+            default=True,
+            server_default=sa.sql.expression.true(),
+        ),
+    )
+
+    op.add_column(
+        "channel_member",
+        sa.Column(
+            "is_channel_muted",
+            sa.Boolean(),
+            nullable=False,
+            default=False,
+            server_default=sa.sql.expression.false(),
+        ),
+    )
+    op.add_column(
+        "channel_member",
+        sa.Column(
+            "is_channel_pinned",
+            sa.Boolean(),
+            nullable=False,
+            default=False,
+            server_default=sa.sql.expression.false(),
+        ),
+    )
+
+    op.add_column("channel_member", sa.Column("data", sa.JSON(), nullable=True))
+    op.add_column("channel_member", sa.Column("meta", sa.JSON(), nullable=True))
+
+    op.add_column(
+        "channel_member", sa.Column("joined_at", sa.BigInteger(), nullable=False)
+    )
+    op.add_column(
+        "channel_member", sa.Column("left_at", sa.BigInteger(), nullable=True)
+    )
+
+    op.add_column(
+        "channel_member", sa.Column("last_read_at", sa.BigInteger(), nullable=True)
+    )
+
+    op.add_column(
+        "channel_member", sa.Column("updated_at", sa.BigInteger(), nullable=True)
+    )
+
+    # New columns to be added to message table
+    op.add_column(
+        "message",
+        sa.Column(
+            "is_pinned",
+            sa.Boolean(),
+            nullable=False,
+            default=False,
+            server_default=sa.sql.expression.false(),
+        ),
+    )
+    op.add_column("message", sa.Column("pinned_at", sa.BigInteger(), nullable=True))
+    op.add_column("message", sa.Column("pinned_by", sa.Text(), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("channel_member", "updated_at")
+    op.drop_column("channel_member", "last_read_at")
+
+    op.drop_column("channel_member", "meta")
+    op.drop_column("channel_member", "data")
+
+    op.drop_column("channel_member", "is_channel_pinned")
+    op.drop_column("channel_member", "is_channel_muted")
+
+    op.drop_column("message", "pinned_by")
+    op.drop_column("message", "pinned_at")
+    op.drop_column("message", "is_pinned")
diff --git a/backend/open_webui/models/channels.py b/backend/open_webui/models/channels.py
index 5f4d1436d9..325ce10143 100644
--- a/backend/open_webui/models/channels.py
+++ b/backend/open_webui/models/channels.py
@@ -48,8 +48,58 @@ class ChannelModel(BaseModel):
     meta: Optional[dict] = None
     access_control: Optional[dict] = None
 
-    created_at: int  # timestamp in epoch
-    updated_at: int  # timestamp in epoch
+    created_at: int  # timestamp in epoch (time_ns)
+    updated_at: int  # timestamp in epoch (time_ns)
+
+
+class ChannelMember(Base):
+    __tablename__ = "channel_member"
+
+    id = Column(Text, primary_key=True, unique=True)
+    channel_id = Column(Text, nullable=False)
+    user_id = Column(Text, nullable=False)
+
+    status = Column(Text, nullable=True)
+    is_active = Column(Boolean, nullable=False, default=True)
+
+    is_channel_muted = Column(Boolean, nullable=False, default=False)
+    is_channel_pinned = Column(Boolean, nullable=False, default=False)
+
+    data = Column(JSON, nullable=True)
+    meta = Column(JSON, nullable=True)
+
+    joined_at = Column(BigInteger)
+    left_at = Column(BigInteger, nullable=True)
+
+    last_read_at = Column(BigInteger, nullable=True)
+
+    created_at = Column(BigInteger)
+    updated_at = Column(BigInteger)
+
+
+class ChannelMemberModel(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: str
+    channel_id: str
+    user_id: str
+
+    status: Optional[str] = None
+    is_active: bool = True
+
+    is_channel_muted: bool = False
+    is_channel_pinned: bool = False
+
+    data: Optional[dict] = None
+    meta: Optional[dict] = None
+
+    joined_at: Optional[int] = None  # timestamp in epoch (time_ns)
+    left_at: Optional[int] = None  # timestamp in epoch (time_ns)
+
+    last_read_at: Optional[int] = None  # timestamp in epoch (time_ns)
+
+    created_at: Optional[int] = None  # timestamp in epoch (time_ns)
+    updated_at: Optional[int] = None  # timestamp in epoch (time_ns)
 
 
 ####################
@@ -109,6 +159,131 @@ class ChannelTable:
             or has_access(user_id, permission, channel.access_control)
         ]
 
+    def join_channel(
+        self, channel_id: str, user_id: str
+    ) -> Optional[ChannelMemberModel]:
+        with get_db() as db:
+            # Check if the membership already exists
+            existing_membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                )
+                .first()
+            )
+            if existing_membership:
+                return ChannelMemberModel.model_validate(existing_membership)
+
+            # Create new membership
+            channel_member = ChannelMemberModel(
+                **{
+                    "id": str(uuid.uuid4()),
+                    "channel_id": channel_id,
+                    "user_id": user_id,
+                    "status": "joined",
+                    "is_active": True,
+                    "is_channel_muted": False,
+                    "is_channel_pinned": False,
+                    "joined_at": int(time.time_ns()),
+                    "left_at": None,
+                    "last_read_at": int(time.time_ns()),
+                    "created_at": int(time.time_ns()),
+                    "updated_at": int(time.time_ns()),
+                }
+            )
+            new_membership = ChannelMember(**channel_member.model_dump())
+
+            db.add(new_membership)
+            db.commit()
+            return channel_member
+
+    def leave_channel(self, channel_id: str, user_id: str) -> bool:
+        with get_db() as db:
+            membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                )
+                .first()
+            )
+            if not membership:
+                return False
+
+            membership.status = "left"
+            membership.is_active = False
+            membership.left_at = int(time.time_ns())
+            membership.updated_at = int(time.time_ns())
+
+            db.commit()
+            return True
+
+    def get_member_by_channel_and_user_id(
+        self, channel_id: str, user_id: str
+    ) -> Optional[ChannelMemberModel]:
+        with get_db() as db:
+            membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                )
+                .first()
+            )
+            return ChannelMemberModel.model_validate(membership) if membership else None
+
+    def pin_channel(self, channel_id: str, user_id: str, is_pinned: bool) -> bool:
+        with get_db() as db:
+            membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                )
+                .first()
+            )
+            if not membership:
+                return False
+
+            membership.is_channel_pinned = is_pinned
+            membership.updated_at = int(time.time_ns())
+
+            db.commit()
+            return True
+
+    def update_member_last_read_at(self, channel_id: str, user_id: str) -> bool:
+        with get_db() as db:
+            membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                )
+                .first()
+            )
+            if not membership:
+                return False
+
+            membership.last_read_at = int(time.time_ns())
+            membership.updated_at = int(time.time_ns())
+
+            db.commit()
+            return True
+
+    def is_user_channel_member(self, channel_id: str, user_id: str) -> bool:
+        with get_db() as db:
+            membership = (
+                db.query(ChannelMember)
+                .filter(
+                    ChannelMember.channel_id == channel_id,
+                    ChannelMember.user_id == user_id,
+                    ChannelMember.is_active == True,
+                )
+                .first()
+            )
+            return membership is not None
+
     def get_channel_by_id(self, id: str) -> Optional[ChannelModel]:
         with get_db() as db:
             channel = db.query(Channel).filter(Channel.id == id).first()
diff --git a/backend/open_webui/models/messages.py b/backend/open_webui/models/messages.py
index 6aaf09ca46..1094035fd5 100644
--- a/backend/open_webui/models/messages.py
+++ b/backend/open_webui/models/messages.py
@@ -6,6 +6,7 @@ from typing import Optional
 from open_webui.internal.db import Base, get_db
 from open_webui.models.tags import TagModel, Tag, Tags
 from open_webui.models.users import Users, UserNameResponse
+from open_webui.models.channels import Channels, ChannelMember
 
 
 from pydantic import BaseModel, ConfigDict
@@ -47,6 +48,11 @@ class Message(Base):
     reply_to_id = Column(Text, nullable=True)
     parent_id = Column(Text, nullable=True)
 
+    # Pins
+    is_pinned = Column(Boolean, nullable=False, default=False)
+    pinned_at = Column(BigInteger, nullable=True)
+    pinned_by = Column(Text, nullable=True)
+
     content = Column(Text)
     data = Column(JSON, nullable=True)
     meta = Column(JSON, nullable=True)
@@ -65,12 +71,17 @@ class MessageModel(BaseModel):
     reply_to_id: Optional[str] = None
     parent_id: Optional[str] = None
 
+    # Pins
+    is_pinned: bool = False
+    pinned_by: Optional[str] = None
+    pinned_at: Optional[int] = None  # timestamp in epoch (time_ns)
+
     content: str
     data: Optional[dict] = None
     meta: Optional[dict] = None
 
-    created_at: int  # timestamp in epoch
-    updated_at: int  # timestamp in epoch
+    created_at: int  # timestamp in epoch (time_ns)
+    updated_at: int  # timestamp in epoch (time_ns)
 
 
 ####################
@@ -111,9 +122,11 @@ class MessageTable:
         self, form_data: MessageForm, channel_id: str, user_id: str
     ) -> Optional[MessageModel]:
         with get_db() as db:
-            id = str(uuid.uuid4())
+            channel_member = Channels.join_channel(channel_id, user_id)
 
+            id = str(uuid.uuid4())
             ts = int(time.time_ns())
+
             message = MessageModel(
                 **{
                     "id": id,
@@ -121,6 +134,9 @@ class MessageTable:
                     "channel_id": channel_id,
                     "reply_to_id": form_data.reply_to_id,
                     "parent_id": form_data.parent_id,
+                    "is_pinned": False,
+                    "pinned_at": None,
+                    "pinned_by": None,
                     "content": form_data.content,
                     "data": form_data.data,
                     "meta": form_data.meta,
@@ -128,8 +144,8 @@ class MessageTable:
                     "updated_at": ts,
                 }
             )
-
             result = Message(**message.model_dump())
+
             db.add(result)
             db.commit()
             db.refresh(result)
@@ -280,6 +296,16 @@ class MessageTable:
                 )
             return messages
 
+    def get_last_message_by_channel_id(self, channel_id: str) -> Optional[MessageModel]:
+        with get_db() as db:
+            message = (
+                db.query(Message)
+                .filter_by(channel_id=channel_id)
+                .order_by(Message.created_at.desc())
+                .first()
+            )
+            return MessageModel.model_validate(message) if message else None
+
     def update_message_by_id(
         self, id: str, form_data: MessageForm
     ) -> Optional[MessageModel]:
@@ -299,6 +325,32 @@ class MessageTable:
             db.refresh(message)
             return MessageModel.model_validate(message) if message else None
 
+    def update_message_pin_by_id(
+        self, id: str, is_pinned: bool, pinned_by: Optional[str] = None
+    ) -> Optional[MessageModel]:
+        with get_db() as db:
+            message = db.get(Message, id)
+            message.is_pinned = is_pinned
+            message.pinned_at = int(time.time_ns()) if is_pinned else None
+            message.pinned_by = pinned_by if is_pinned else None
+            message.updated_at = int(time.time_ns())
+            db.commit()
+            db.refresh(message)
+            return MessageModel.model_validate(message) if message else None
+
+    def get_unread_message_count(
+        self, channel_id: str, user_id: str, last_read_at: Optional[int] = None
+    ) -> int:
+        with get_db() as db:
+            query = db.query(Message).filter(
+                Message.channel_id == channel_id,
+                Message.parent_id == None,  # only count top-level messages
+                Message.created_at > (last_read_at if last_read_at else 0),
+            )
+            if user_id:
+                query = query.filter(Message.user_id != user_id)
+            return query.count()
+
     def add_reaction_to_message(
         self, id: str, user_id: str, name: str
     ) -> Optional[MessageReactionModel]:
diff --git a/backend/open_webui/routers/channels.py b/backend/open_webui/routers/channels.py
index e47c98554e..e720648a7d 100644
--- a/backend/open_webui/routers/channels.py
+++ b/backend/open_webui/routers/channels.py
@@ -65,9 +65,35 @@ router = APIRouter()
 ############################
 
 
-@router.get("/", response_model=list[ChannelModel])
+class ChannelListItemResponse(ChannelModel):
+    last_message_at: Optional[int] = None  # timestamp in epoch (time_ns)
+    unread_count: int = 0
+
+
+@router.get("/", response_model=list[ChannelListItemResponse])
 async def get_channels(user=Depends(get_verified_user)):
-    return Channels.get_channels_by_user_id(user.id)
+
+    channels = Channels.get_channels_by_user_id(user.id)
+
+    channel_list = []
+    for channel in channels:
+        last_message = Messages.get_last_message_by_channel_id(channel.id)
+        last_message_at = last_message.created_at if last_message else None
+
+        channel_member = Channels.get_member_by_channel_and_user_id(channel.id, user.id)
+        unread_count = Messages.get_unread_message_count(
+            channel.id, user.id, channel_member.last_read_at if channel_member else None
+        )
+
+        channel_list.append(
+            ChannelListItemResponse(
+                **channel.model_dump(),
+                last_message_at=last_message_at,
+                unread_count=unread_count,
+            )
+        )
+
+    return channel_list
 
 
 @router.get("/list", response_model=list[ChannelModel])
@@ -259,6 +285,10 @@ async def get_channel_messages(
             status_code=status.HTTP_403_FORBIDDEN, detail=ERROR_MESSAGES.DEFAULT()
         )
 
+    channel_member = Channels.join_channel(
+        id, user.id
+    )  # Ensure user is a member of the channel
+
     message_list = Messages.get_messages_by_channel_id(id, skip, limit)
     users = {}
 
@@ -297,7 +327,9 @@ async def send_notification(name, webui_url, channel, message, active_user_ids):
     users = get_users_with_access("read", channel.access_control)
 
     for user in users:
-        if user.id not in active_user_ids:
+        if (user.id not in active_user_ids) and Channels.is_user_channel_member(
+            channel.id, user.id
+        ):
             if user.settings:
                 webhook_url = user.settings.ui.get("notifications", {}).get(
                     "webhook_url", None
diff --git a/backend/open_webui/socket/main.py b/backend/open_webui/socket/main.py
index bbfbfa2703..04b67dd786 100644
--- a/backend/open_webui/socket/main.py
+++ b/backend/open_webui/socket/main.py
@@ -408,6 +408,11 @@ async def channel_events(sid, data):
     event_data = data["data"]
     event_type = event_data["type"]
 
+    user = SESSION_POOL.get(sid)
+
+    if not user:
+        return
+
     if event_type == "typing":
         await sio.emit(
             "events:channel",
@@ -415,10 +420,12 @@ async def channel_events(sid, data):
                 "channel_id": data["channel_id"],
                 "message_id": data.get("message_id", None),
                 "data": event_data,
-                "user": UserNameResponse(**SESSION_POOL[sid]).model_dump(),
+                "user": UserNameResponse(**user).model_dump(),
             },
             room=room,
         )
+    elif event_type == "last_read_at":
+        Channels.update_member_last_read_at(data["channel_id"], user["id"])
 
 
 @sio.on("ydoc:document:join")
diff --git a/src/lib/components/channel/Channel.svelte b/src/lib/components/channel/Channel.svelte
index 40ce02f3fe..419870937a 100644
--- a/src/lib/components/channel/Channel.svelte
+++ b/src/lib/components/channel/Channel.svelte
@@ -18,6 +18,8 @@
 
 	export let id = '';
 
+	let currentId = null;
+
 	let scrollEnd = true;
 	let messagesContainerElement = null;
 	let chatInputElement = null;
@@ -43,7 +45,24 @@
 		}
 	};
 
+	const updateLastReadAt = async (channelId) => {
+		$socket?.emit('events:channel', {
+			channel_id: channelId,
+			message_id: null,
+			data: {
+				type: 'last_read_at'
+			}
+		});
+	};
+
 	const initHandler = async () => {
+		if (currentId) {
+			updateLastReadAt(currentId);
+		}
+
+		currentId = id;
+		updateLastReadAt(id);
+
 		top = false;
 		messages = null;
 		channel = null;
@@ -170,6 +189,8 @@
 				}
 			}
 		});
+
+		updateLastReadAt(id);
 	};
 
 	let mediaQuery;
@@ -197,6 +218,8 @@
 	});
 
 	onDestroy(() => {
+		// last read at
+		updateLastReadAt(id);
 		$socket?.off('events:channel', channelEventHandler);
 	});
 </script>
diff --git a/src/lib/components/layout/Sidebar/ChannelItem.svelte b/src/lib/components/layout/Sidebar/ChannelItem.svelte
index 4ea884cf9d..09b8fcfaf6 100644
--- a/src/lib/components/layout/Sidebar/ChannelItem.svelte
+++ b/src/lib/components/layout/Sidebar/ChannelItem.svelte
@@ -4,7 +4,7 @@
 	const i18n = getContext('i18n');
 
 	import { page } from '$app/stores';
-	import { mobile, showSidebar, user } from '$lib/stores';
+	import { channels, mobile, showSidebar, user } from '$lib/stores';
 	import { updateChannelById } from '$lib/apis/channels';
 
 	import Cog6 from '$lib/components/icons/Cog6.svelte';
@@ -49,13 +49,27 @@
 	class=" w-full {className} rounded-xl flex relative group hover:bg-gray-100 dark:hover:bg-gray-900 {$page
 		.url.pathname === `/channels/${channel.id}`
 		? 'bg-gray-100 dark:bg-gray-900 selected'
-		: ''} px-2.5 py-1"
+		: ''} px-2.5 py-1 {channel?.unread_count > 0
+		? 'font-medium dark:text-white text-black'
+		: ' dark:text-gray-400 text-gray-600'} cursor-pointer select-none"
 >
 	<a
 		class=" w-full flex justify-between"
 		href="/channels/{channel.id}"
 		on:click={() => {
 			console.log(channel);
+
+			if ($channels) {
+				channels.set(
+					$channels.map((ch) => {
+						if (ch.id === channel.id) {
+							ch.unread_count = 0;
+						}
+						return ch;
+					})
+				);
+			}
+
 			if ($mobile) {
 				showSidebar.set(false);
 			}
@@ -75,19 +89,32 @@
 				{channel.name}
 			</div>
 		</div>
-	</a>
 
-	{#if $user?.role === 'admin'}
-		<div
-			class="absolute z-10 right-2 invisible group-hover:visible self-center flex items-center dark:text-gray-300"
-			on:click={(e) => {
-				e.stopPropagation();
-				showEditChannelModal = true;
-			}}
-		>
-			<button class="p-0.5 dark:hover:bg-gray-850 rounded-lg touch-auto" on:click={(e) => {}}>
-				<Cog6 className="size-3.5" />
-			</button>
+		<div class="flex items-center">
+			{#if channel?.unread_count > 0}
+				<div
+					class="text-xs py-[1px] px-2 rounded-xl bg-gray-100 text-black dark:bg-gray-800 dark:text-white font-medium"
+				>
+					{new Intl.NumberFormat($i18n.locale, {
+						notation: 'compact',
+						compactDisplay: 'short'
+					}).format(channel.unread_count)}
+				</div>
+			{/if}
+
+			{#if $user?.role === 'admin'}
+				<div
+					class="right-2 invisible group-hover:visible self-center flex items-center dark:text-gray-300"
+					on:click={(e) => {
+						e.stopPropagation();
+						showEditChannelModal = true;
+					}}
+				>
+					<button class="p-0.5 dark:hover:bg-gray-850 rounded-lg touch-auto" on:click={(e) => {}}>
+						<Cog6 className="size-3.5" />
+					</button>
+				</div>
+			{/if}
 		</div>
-	{/if}
+	</a>
 </div>
diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 9408604da6..5c1080cfea 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -28,7 +28,8 @@
 		isApp,
 		appInfo,
 		toolServers,
-		playingNotificationSound
+		playingNotificationSound,
+		channels
 	} from '$lib/stores';
 	import { goto } from '$app/navigation';
 	import { page } from '$app/stores';
@@ -483,6 +484,23 @@
 			const type = event?.data?.type ?? null;
 			const data = event?.data?.data ?? null;
 
+			if ($channels) {
+				channels.set(
+					$channels.map((ch) => {
+						if (ch.id === event.channel_id) {
+							if (type === 'message') {
+								return {
+									...ch,
+									unread_count: (ch.unread_count ?? 0) + 1,
+									last_message_at: event.created_at
+								};
+							}
+						}
+						return ch;
+					})
+				);
+			}
+
 			if (type === 'message') {
 				if ($isLastActiveTab) {
 					if ($settings?.notificationEnabled ?? false) {