Download of Text2Mail 1.2.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The software lies within Communication Tools, more precisely E-mail. The actual developer of this software for Mac is Tomoyuki Okawa.
From the developer:
Text2Mail offers an easy and quick solution to send the same message to multiple e-mail addresses quickly through Apple's Mail. Text2Mail uses a document file to compose multiple documents on Mail. All you need to do is drag and drop an existing document file containing a message with pictures and hyperlinks onto the application's drop box.
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 Text2Mail.