Systeme io Questions and Answers (FAQ)
Since September 2022, Systeme io has allowed users to use Gmail addresses instead of professional email. You just need to enter your preferred Gmail address into the “Sender email address” field.
Do take note that using professional email (i.e. email address using your own domain name) is still recommended instead of using Gmail.
Be warned, though, do not spam as the Systeme io team is watching closely.