On the member page, you can see the 5 most recent emails and text messages that were sent to a member. Click on the subject line to see the email/text message content that was sent.
Sent: Yes means the email or text message was sent (although that doesn't guarantee that they received it...)
Sent: No means that it is still a draft. Click on the subject to go to the email/text message page and you can send it from there.