There're few things you could try If you're receiving an error when trying to setup your gmail account as a custom email address;

Generate an app password for Plutio and use the app password in plutio email settings instead of the email password.

Allow per-user outbound gateways

Turn off 2-Step Verification.

Allow the access from the less secure app. The activity may show from an Unknown Device.

Enable "less secure apps".


It is recommend using or as the server relay for when connecting a GSuite account. Please try both.
Was this article helpful?
Thank you!