Downloading Whoosh 2.0.3 for Mac from our website was free. The bundle identifier for Whoosh for Mac is com.theescapers.whoosh. This Mac application was originally developed by The Escapers Ltd. The most popular version among the program users is 1.1. The program is included in Communication Tools.
From the developer:
Whoosh is a client for Amazon SES, Simple Email Service. Whoosh allows import of email lists and sending of bulk email (including HTML mail).
You may want to check out more software for Mac, such as GeeMail, Mail Forward or YAI, which might be similar to Whoosh.