Bait and Switch

My Mac already opens the email, but does not open the Winmail.dat attachment. When I click on the attachment, this app re-opens the email, showing the attachment as a PDF, rather than a .DAT file, along with the notice that if you want to open the PDF, you can buy the Premium version for $9.99. In other words, it’s useless.

InnerEye22 about Winmail Viewer - Letter Opener, v3.0.7