22.4.2022 UPDATE - We only support Google App Passwords going forward as "Less secure apps" option is not supported by Google anymore.
While Gmail is a great service it can be tricky to get to work as an SMTP server. Please use these settings in order to set it as an SMTP server properly.
- In the SMTP server field, set it to
- Set used port to
- Enable "TLS"
- Enable "Use Authentication"
- Enter your Gmail username and Google App password under credentials (NB: leave the domain field blank)