Message delivery status is only available in 1:1 conversations.
On desktop
Next to your most recently sent message, you see the status Sent, Delivered, or Unsent until your contact read the message.
Sent means that your device has sent the message.
Delivered means that your message has been received at your contact’s device.
Unsent means that your message could not be sent.
Learn more about read receipts.
On mobile
iOS
Select a message you've sent and you see the status Sent, Delivered, or Unsent until your contact read the message.
Sent means that your device has sent the message.
Delivered means that your message has been received at your contact’s device.
Unsent means that your message could not be sent.
Android
Select a message you've sent and you see the status sent, delivered until your contact read the message.
This icon means that your device has sent the message.
This icon means that your message has been received at your contact’s device.
Learn more about read receipts.