Rated 4 out of 5 stars

by Alan on Sept. 3, 2026 · permalink

I've been using Cardbook for many years and it is brilliant. I didn't realise how dependent I am on it until Thunderbird was just automatically updated to V155 and Cardbook became disabled. It seems that Cardbook will need a modification to restore compatibility. Is that likely to happen soon?

Your suggested of using Thunderbird 153 ESR instead would require me to create a new profile, which will be a major task since I monitor 6 email addresses and make extensive use of message filters, all of which would have to be re-created.