Rated 5 out of 5 stars
I posted in your forums about adding an action to extract attachment.
Wait for TB 3.1
I have added to the Thunderbird core code a new method which will allow me to implement a "detach to folder" option for FiltaQuilla versions that use that. This will be in FiltaQuilla 1.10 when used with Thunderbird 3.1 beta 2. I think this is what you wanted, as I already had an action to save attachment.