Downloading MacMassMailer 4.25 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is Ixis Research LTD. The software is included in Communication Tools.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The application's installation file is generally known as mailer.zip. The following versions: 4.1, 3.1 and 1.1 are the most frequently downloaded ones by the program users.
From the developer:
MacMassMailer is a fully-featured mac mass mailer for Apple Mac computer supporting message templates and recipient database. It offers everything you need to create and maintain mailing lists for different needs and send mass messages directly form your Mac at a very high speed.
It uses Apple Mail's message delivery framework to deliver your messages.
You may want to check out more software for Mac, such as MailStewardLite, AdvancedMacMailer or MacBiff, which might be similar to MacMassMailer.