Right-click (or long-press on mobile) any message you sent and select Delete. The message content is permanently removed and replaced with a "Message deleted" notice that both you and the recipient can see.
What You Can Delete
You can only delete messages that you sent — you cannot delete messages sent by other people
Deleted messages are removed from the conversation for both parties
If the message contained images or files, those attachments are also permanently deleted from our servers
What Deletion Looks Like
After deletion, the recipient sees a grayed-out "Message deleted" placeholder where your message used to be. They cannot recover or view the original content. Any reactions on the deleted message are also removed.
Important Notes
Deletion is permanent — there is no undo
If the recipient already read the message before you deleted it, they may have already seen the content
Push notification previews may have shown a snippet of the message before deletion