Messenger question

Message I sent was not read – can I be sure it was delivered? When I look at my messenger log it lacks the miniature picture of the recipient at the bottom of the message which normally would indicate it was read. Instead there’s a little blue checkmark in a circle. I’m trying to determine if it was indeed delivered and the recipient has chosen not to open it, or if maybe it was not received.

You’ll get a lot better responses if you tell us what program you’re using.

Facebook. Is that enough info?

It depends on whether or not the circle is filled in.