Are you using pop to access Gmail? If so, set up a mail rule. Setup a rule that says any mail sent from your email address is moved to your sent folder.
Are you using pop to access Gmail? If so, set up a mail rule. Setup a rule that says any mail sent from your email address is moved to your sent folder.
Basically, pop removes messages from the inbox and physically downloads them to your computer. IMAP just lets you access the server. Benefits of IMAP is you can access your mail in total sync from multiple computers and/or locations, which is something you can't do with pop.