Download of PostNewsletter 1.5.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Communication Tools, more precisely E-mail.
The most frequent installer filename for the program is: postnewsletter_mac.dmg. This Mac application is an intellectual property of Stephan Schulmeister. The following version: 1.5 is the most frequently downloaded one by the program users. We recommend checking the downloaded files with any free antivirus.
From the developer:
PostNewsletter: Free E-Mail Newsletter Tool for Windows and MacOSX.
PostNewsletter is mass e-mailer. It sends personalized html-based E-Mails to a huge amount of recipients. This is done via smtp.
You may send up to 5 e-mails newsletter with the untegistered copy. If you want to send thousands of e-mails you have to obtain a full version.
You may want to check out more Mac applications, such as SkypeMW, Zimbra Toaster or Enough, which might be similar to PostNewsletter.