For the last 4 weeks wer have been having issues with not being able to send emails from our Gmail account. We can rcv them fine, but when sending they just sit in the outbox.
I have deleted the account and then re-added it several times which temp solves the issue but it always comes back.
You have the correct SMTP settings. Go to Menu > Tools > Accounts and click on the SMTP tab. Set the port to 587 and the security policy to Force usage of SSL/TLS.
If that does not help, temporarily disable your antivirus and firewall application, then try again. Sometimes these applications block the ports so you may have to reconfigure them.
If that still does not help, go to Menu > Tools > Operations , copy the error and post it here.