Zap Attachment Viewer
Step 1: Install the solution from Microsoft AppSource. (To request solution file, email firstname.lastname@example.org)
Step 2: Browse to Settings >> Solutions and then double-click the app solution file. Register the profile online, to generate free license. (Refer Licensing KB articles for more info)
Feel free to email email@example.com for any questions.
Some areas of user-guide are password protected. Email firstname.lastname@example.org from your official email address to request password.