Rated 5 out of 5 stars

Από τον/την some_hren στις Απρίλ. 3, 2012 · μόνιμος σύνδεσμος

Everything is quite OK, at least for getting others free/busy status with http from CommuniGate Pro (publishing happens automatically there, so I've not tested it). Makes lightning usable for me. Big thanks to author.
Tested with current Thunderbird 11 under Windows.