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What does each check box mean when a message is sent on messenger? How do you know when it has been read?
I'm curious about the check boxes next to messages on Messenger. What do they mean?
The check boxes on Messenger determine the status of a message. A solid blue circle means the message has been sent, a blue circle with a white checkmark means the message has been delivered to the recipient's device, and a blue circle with a filled-in blue checkmark means the recipient has seen the message.