How to mark all chats as read in Telegram Desktop?
If you have a lot of unread chats in Telegram Desktop and you can’t view them all, you can mark them as read.
Recently Telegram Desktop developers introduced a new update that introduced this feature.
1. Go to the Telegram Desktop program.
2. Right click on any chat.
3. Click on the appeared button “Mark all chats as read”.
4. Confirm the action by pressing “OK”.
You can also dial a combination “Ctrl + R”, to mark a specific chat as read by hovering the mouse cursor over it.