- 2016-01-26 – Firefox 44
- 2016-03-08 – Firefox 45, ESR 45 (6 weeks cycle)
- 2016-04-19 – Firefox 46 (6 weeks cycle)
- 2016-06-07 – Firefox 47 (7 weeks cycle)
- 2016-08-02 – Firefox 48 (8 weeks cycle)
- 2016-09-13 – Firefox 49 (6 weeks cycle)
- 2016-11-08 – Firefox 50 (8 weeks cycle)
- 2016-12-13 – Firefox 50.0.1 (5 week cycle, release for critical fixes as needed)
- 2017-01-24 – Firefox 51 (6 weeks from prior release)
Mozilla quietly deleted this feature from Firefox 44, with no functional equivalent put in its place. Further, users who had enabled the "Ask before accept" feature have had that preference silently changed to, "Accept normally." The proffered excuse for the removal was that the feature was unmaintained, and that its users were, "probably crashing multiple times a day as a result" (although no evidence was presented to support this assertion). Mozilla's apparent position is that users wishing fine-grained cookie control should be using a third-party add-on instead, and that an "Ask before accept" option was, "not really nice to use on today's Web."
I am definitely a starter. I tend to be interested in a lot of various things, instead of dedicating myself to a few concentrated areas. I've maintained libraries for years, but it's always a huge source of guilt and late Friday nights to catch up on a backlog of issues. ... Here's to all the maintainers out there. To all the people putting in tireless, thankless work behind-the-scenes to keep code alive, to write documentation, to cut releases, to register domain names, and everything else."
Things I like about Thunderbird: Supports multiple email accounts; simple interface; storage structure is not one monolithic file; plain text email editor; filtering. Things I don't like: HTML email editor; folders are hard to change and re-arrange.