Comment 105 for bug 849416

Neil, could you explain why this important bug is currently stalled?
What is needed/missing to get it moving again?

This has been elevated to "major" by rkent in 2014, 7 duplicates, 24 votes, and obviously biting people badly when they miss their invitations because Thunderbird doesn't show them (regardless of the fact the respective messages might be malformed by other widespread mailers, we should safeguard against that).