Rated 5 out of 5 stars
Bugmail 2.0 from https://github.com/fabricedesre/bugmail.git
After updating from SeaMonkey 2.27a1 to 2.31a1 the extension stops working (no more bugmail display when viewing a bugmail from bugzilla.mozilla.org). I'll try Colin Guthrie's version.
Here are my UA strings, build IDs, and CSIDs:
2.27a1: Mozilla/5.0 (X11; Linux x86_64; rv:30.0) Gecko/20100101 Firefox/30.0 SeaMonkey/2.27a1 ID:20140214003001 c-c:1ce77c2f9bd0 m-c:d275eebfae04
2.31a1: Mozilla/5.0 (X11; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0 SeaMonkey/2.31a1 ID:20140723133406 c-c:acb745a4d796 m-c:d0f6259e8446
-- AMO gives contrary messages (about 1.6.1): "Works with SeaMonkey 2.0a1and later" and "Not available for SeaMonkey 2.31a1".
-- "Please do not post bug reports in reviews, see the support section"... of which there is none.
This was an excellent add-on… while it worked.