Select ‘Accounts…’ from the Tools Menu.
Double-click on your current account.
Enter your email address into the Email Address field.
Change the Sending mail SMTP Server setting to mail.smtp2go.com and click the button ‘Click here for advanced sending options’.
Make sure that SMTP service requires secure connection (SSL) is enabled.
For the Override default SMTP port setting, enter 465. You can also try entering 8465. If you are unable to use SSL, you can disable it and try port 255, 25, 8025 or 587.
Make sure that SMTP server requires authentication is enabled, select Log on using, then enter your SMTP Username into Account ID, and your SMTP Password into Password.
Check the box Save password in my Mac OS keychain.
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