Rated 5 out of 5 stars

Just what i needed for my company. Tried with filters on incoming messages, but not always work. This way the attachments are blocked or the user can be warned if file is dangerous to open or not, or why the file are blocked. Extensions are configurable and also the warning messages. Very useful. Tnx
PS: I add some extensions to the warning attachments, like 7z, and some others from files from MSOffice with macros enabled.

This review is for a previous version of the add-on (0.4). 

Thank you for your feedback! The list of extension has been adapted in version 0.4:
- The MS *.???x formats were removed. They can not include macros
- The MS *.???m formats were added. They can include macros
- 7z will be added in the next update

If you have other file extensions that should be added, feel free to share them with me