In fast-paced corporate environments, Microsoft Teams conversations move rapidly. When you receive an urgent file request, actionable project feedback, or a complex query while in the middle of a meeting, opening the notification clears the unread indicator. Without a visual reminder, crucial messages frequently slip through the cracks, leading to delayed responses and missed project deadlines.
Fortunately, Microsoft Teams offers dedicated features allowing users to mark individual messages or entire conversations as unread across Windows, macOS, web, and mobile clients. Marking an item as unread restores bold typography, resets conversation counters, and re-flags the channel or direct chat in your activity feeds. This guide explains how to mark messages and chats as unread in Microsoft Teams and effectively triage pending work.
Marking an Individual Message as Unread on Desktop
When someone sends multiple messages within a single chat or channel thread, you might have read the opening remarks but want to reserve action on a specific statement or attachment later in the day. Teams allows you to mark the exact message as unread.
- Open the Microsoft Teams desktop app on Windows or Mac (or access Teams in your web browser).
- Navigate to the relevant chat thread or team channel containing the message.
- Hover your mouse cursor over the specific message you want to flag.
- In the small reaction and action toolbar that appears above the message bubble, click the More options button (the three horizontal dots …).
- From the context menu, select Mark as unread.
Upon clicking this option, Teams places a prominent red horizontal divider line directly above that message reading Unread messages. The chat or channel name in your sidebar immediately reverts to bold text, and a blue unread indicator badge appears next to the conversation.
Marking an Entire Chat Conversation as Unread
If you quickly scanned an entire direct chat or group conversation and want the complete dialogue highlighted as pending review, you can mark the conversation thread directly from the sidebar without opening it.
- In the left-hand navigation pane, select the Chat tab.
- Locate the direct or group chat conversation you wish to mark.
- Hover over the chat entry and click the More options icon (three dots …) that appears on the right edge. Alternatively, right-click the conversation.
- Click Mark as unread.
The conversation title instantly turns bold, and an unread badge indicator counter displays beside it. The primary Chat icon on the main app navigation bar will also increase its unread count by one.
| Action Method | Desktop & Web Path | Mobile (iOS & Android) Path | Visual Result |
|---|---|---|---|
| Single Message | Hover > Three Dots > Mark as unread | Long-press message > Mark as unread | Red unread barrier line above message |
| Entire Chat List Entry | Sidebar > Three Dots / Right-click > Mark as unread | Swipe right on chat in list > Tap Unread | Bold title text and sidebar badge counter |
| Channel Post | Hover channel post > Three Dots > Mark as unread | Long-press channel post > Mark as unread | Bold channel name in Teams sidebar |
Marking Chats as Unread on Mobile (iPhone, iPad, and Android)
If you review Teams notifications on your phone during transit or between meetings, marking chats as unread is equally straightforward using touch gestures.
On iOS (iPhone and iPad):
- Open the Teams app on your iOS device.
- Tap the Chat tab at the bottom of the screen.
- Swipe from left to right across the conversation row in your chat list.
- Tap the blue Unread icon that appears.
On Android:
- Open the Teams app on your Android device.
- Navigate to the Chat tab.
- Press and hold (long-press) the conversation row in the list until a selection checkmark appears.
- Tap the Mark as unread envelope icon located in the top-right toolbar (or tap the three-dot menu and choose Mark as unread).
To mark an individual message as unread on either mobile platform, tap and hold the message bubble itself within the conversation, scroll down the pop-up options sheet, and tap Mark as unread.
Using the Unread Filter to Triage Your Daily Workflow
Marking conversations as unread provides maximum utility when combined with Teams’ built-in filtering tools. When you return to your desk after meetings, you can display only your pending unread tasks in seconds.
- Go to the Chat pane in the desktop app.
- At the top of the chat list, click the Filter icon (the funnel symbol) or press the keyboard shortcut Ctrl + Shift + F (Windows) / Cmd + Shift + F (Mac).
- Click the Unread filter toggle.
Teams hides all read and archived discussions, displaying exclusively the conversations that require your attention. Once you address each conversation, opening it or manually marking it as read clears it from the filtered view.
Key Nuances to Keep in Mind
- Mark as Unread is Local to Your Account: Marking a message or chat as unread only alters your personal view. It does not affect the sender’s read receipts, nor does it mark the item unread for other teammates in group conversations.
- Read Receipts Behaviour: If read receipts are enabled in your organisation, the sender will already have received a read checkmark when you first viewed the message. Marking it as unread afterwards does not revoke or erase the delivered read receipt.
- Multi-Device Syncing: Unread status synchronises through your Microsoft 365 cloud profile. If you mark a chat unread on your desktop, it will show as unread on your mobile app within seconds.
Incorporating the unread feature into your daily Microsoft Teams routine ensures that critical tasks, file reviews, and coworker requests remain front and centre until you have dedicated time to resolve them.