Very helpful for a freelancer Rated 5 out of 5 stars
This is the only add-on, I'd expect to be a standard part of the application so far. Thanks for creating it, and hopefully it will remain available for future Thunderbird versions or get integrated into the core product.
Regular expressions and simple matching make the setup very easy. Especially as a freelancer, who works with various companies and has a company mail account with each of his employers, this add-on is a huge life-saver.