Still, no response from SmarterMail. It seems that they are not interested to route emails through Google Gsuite to avoid IP Blacklisting/Domain Bad Reputation issue.
If such functionality SmarterMail offers, everybody would spread add-on love on it :-)
Regards,
Pratik Jajal
Pratik Jajal
Younited Host - The best Web Hosting Provider
Email: pedro@younitedhost.com