Search for your Setup Guide Search Enter a keyword describing your email sending software, such as outlook, iphone, xerox, exim, php, etc.Or use the generic instructions below. Generic Instructions SMTP server: Enter your account's SMTP server. Log into your SMTP2GO control panel to see what this is. SMTP port: 2525 (or port 25, 8025, or 587 if that does not work). SMTP username/password: Turn on SMTP authentication and enter your account's SMTP username and SMTP password. Note: TLS/SSL is optional. TLS is available on the same ports. SSL is available on ports 465 and 8465. Additional instructions for your mail app can be found using the search box above. Alternatively... view a full list as a webpage.