Review for Muttator by nvarsj
Rated 4 out of 5 stars
I built it directly from the source (http://code.google.com/p/vimperator-labs/) and it works great with Thunderbird 15.
hg clone https://code.google.com/p/vimperator-labs/
cd vimperator-labs && make
Then install the muttator xpi in the downloads directory.
To create your own collections, you must have a Mozilla Add-ons account.