Seperate SMTP Email per User

Is there a setting im missing here? I create the first user, add the email address. I then set my mail providoer as mailgun and enter in all the details. I then have another user and i go to email out a quote from User2 but the email address is saying its User1. Does anyone know how to fix this?? Should be simple enough

Hi,

Sorry, it isn’t supported. All emails in the company are sent using the same SMTP credentials.

do you know of ANYTHING out there that can do this?