New iMacMailer

Includes support for SMTP Server accounts and full Amazon SES API support for superfast, unlimited sending
(Why do I need Amazon SES?)

Mac OS 10.6 And Higher

Classic MacMassMailer

Includes support for SMTP Server accounts only

and the groups tree

Mac OS 10.6 And Higher

Download iMacMailer MacMassMailerBoth packages are in the same .zip file

This download package includes both iMacMailer and MacMassMailer and the key that you purchase will also work seamlessly with both of them.

There is no need to pick one of the two, take both