Rated 5 out of 5 stars

UPDATE: Thanks for responding, Chris. I've got it working now. I tried running the command via the tools menu and it still didn't work. So, I deleted and recreated the filter in question and it worked right away. I don't know what the issue was, but all is well now. Changing my review to 5 stars, as this seems to be some sort of random Thunderbird glitch, not related to your add-on. Thanks for following up!

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I'm afraid it didn't work for me. Running Thunderbird v13 on Windows Vista. Clicking button does nothing. No error messages. I'll be happy to revise this review if I can get it to work; it's a neat idea.

This review is for a previous version of the add-on (1.3). 

Im sorry to hear it doesn't work for you.
I have tested it on many different platform and did not have any issues.
It is very strange that is does not work for you, as all this plugin does, it is the same as clicking on the tools menu and run filters on folder.
Do your filters work fine when run via the tools menu?

Have a good one,
Chris