Note for IMAP/POP users: If you access Gmail through a POP or IMAP email client (e.g. Outlook) and would like to send messages with a custom "from" address, you have two options. We recommend that you configure your email client with two outgoing SMTP servers, one for Gmail and one for your other address. Your second option is to use Gmail's outbound servers with a different "from" address. If you've already configured the custom from address in the web interface, your message will be sent from:otheraddress@domain.com, sender:username@gmail.com, regardless of which custom from configuration you chose. Your messages will be sent from your regular Gmail address if you never configured your custom from settings in the web interface.
Note for IMAP/POP users: If you access Gmail through a POP or IMAP email client (e.g. Outlook) and would like to send messages with a custom "from" address, you have two options. We recommend that you configure your email client with two outgoing SMTP servers, one for Gmail and one for your other address. Your second option is to use Gmail's outbound servers with a different "from" address. If you've already configured the custom from address in the web interface, your message will be sent from:otheraddress@domain.com, sender:username@gmail.com, regardless of which custom from configuration you chose. Your messages will be sent from your regular Gmail address if you never configured your custom from settings in the web interface.