UniMailer 2.3.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. UniMailer for Mac is included in Communication Tools. The actual developer of this software for Mac is JAPISoft. We recommend checking the downloaded files with any free antivirus.
From the developer:
UniMailer is the ideal companion for e-mailing new products and services to your customers, delivering and managing newsletters, or simply staying in touch with family and friends. UniMailer will make the process effortless by managing various user groups, adding your own parameters for personalizing each mail using an internal data base stored, adding various attachments. UniMailer works with plain text or html text.
You may want to check out more software for Mac, such as Zimbra Toaster, PageSender or Mail to ToDo X, which might be similar to UniMailer.
E-mail Tools
E-mail Tools