Outlook wraps URLS in emails so that they go through their URL "protection" scheme, called ATP Safe Links.
The problem is that this makes URLs in emails very long when using Thunderbird and this makes it harder to figure out where they point to. This addon replaces the Safe Link URL with a direct link to the URL target, thereby bypassing the URL "protection".
This code is based on the SmileyFixer Thunderbird Addon.
Clone the repository locally then run make
$ git clone https://github.com/GjjvdBurg/safelinksfixer.git
$ cd safelinksfixer
$ makeInstall the resulting xpi file in Thunderbird 3+ from the Add-ons menu option.
All code is covered by the Apache version 2.0 license.