some exciting news: the extension finally made it out of the sandbox and onto the public site on addons.mozilla.org! it took about two months with no feedback whatsoever, but i guess they finally got around to looking at it.

check it out:
https://addons.mozilla.org/en-US/thunderbird/addon/5759

it's still an older version, i submitted the newest version but it's pending. i hope it won't be taking two months for approval with every version upgrade...