How to use SMTP in StudioX

My company does not use Outlook.
So we cannot use the Mail Activity provided in StudioX.

Instead, I want to use SMTP.
How can I use it in StudioX?

StudioX supports email service only about outlook solution yet.
If you should use SMTP, you can use it on Studio not StudioX.
Or using web/app activity, you have to click or type one by one to build mail process on StudioX.