Edit and delete messages in Microsoft Teams
Edit a sent message
You can edit any message that you have sent to a chat or channel. There's no limit to how many times you can make changes to a sent message.
Hover over the message you have sent. A floating options bar will appear. Select More options , then Edit.
Make changes to your message, then press Enter or click on the checkmark to save the update.
Delete a sent message
You can backtrack and delete something you just sent.
Hover over the message you have sent. A floating options bar will appear. Select More options , then Delete.
If you haven't sent the message yet, select Format to expand the box and then select Delete .
Undo a deleted message
Go to the deleted message and select Undo.