The 4.x series introduced significant improvements to the software's engine and editing capabilities.
Supports up to 100 simultaneous connections to speed up the mailing process. SendBlaster Pro Edition 4.3.4
Allows Pro users to create subgroups based on specific rules for more targeted campaigns. SendBlaster Pro Edition 4.3.4
Features a polished editor that better preserves original HTML code and conforms to modern standards. SendBlaster Pro Edition 4.3.4