Hello ConvincingMail,
I downloaded the demo version of your software but experienced problems with SMTP server.
It seems that your app send an incorrect command to my SMTP and the server drops the connection and it doesn't sent emails.
I changed to another SMTP and it helped but I still have no clue why it doesn't work with the first one.
So my Suggestion is:
A detailed log of SMTP commands the software sends when Testing a connection on "account setup" page and on "Compose message" in "Test" popup?
other than that the software works for me!
I have about 300 contacts so i'm on free version but plan to upgrade soon.
kind regards