I'm trying to use your e-Newsletter plugin, but I would

Hello,
I'm trying to use your e-Newsletter plugin, but I would like to set up my SMTP aside of the user's account, cause of course I don't want to reveal this to others. Users mostly have not their own SMTP servers anyway.

Users across the network also cannot use my php mail funtion. My IP will be immediately blacklisted.

How this was intended?

Thank you.