How do I locate an email in Send Later file?

When I write an email, I would like to SEND it immediately. Sometimes after writing an email, instead of SEND, the message SEND LATER appears with no choice for just SEND. I would like to eliminate the SEND LATER. Now I have an email in limbo because I had to click SEND LATER yesterday and I do not know how to retrieve the email so I can SEND it. In the past, I've had a message about being off line and asking if I'd like to SEND the stored messages, which is an easy fix. However, this particular email is lost and I'd prefer to SEND it rather than rewriting. Do you have a solution? Thank you very much