I'm trying to set up my inbox in one gmail account to both receive and send messages from another gmail account. This is possible by setting up a 'send mail as' option in the Gmail settings. But I get this error: Functionality not enabled. You must send through XXXXX.com SMTP servers when you send as david@XXXXX.com. However, this functionality is not available for your account. Please contact your domain administrator for more information. I would like someone familiar with solving this issue to do a remote login during US East Coast business hours and fix this issue. Many thanks.