Meanwhile Thunderbird has corrupted my inbox 3 times in a sum total of about 3 years of me using it spread out over a decade, crashes more than evolution, and does the core messaging features worse than claws.
Meanwhile Thunderbird has corrupted my inbox 3 times in a sum total of about 3 years of me using it spread out over a decade, crashes more than evolution, and does the core messaging features worse than claws.
I'm possibly using it more than 15 years as of today and it never corrupted a mailbox or lost any mail. Its filters are top notch and it has one of the best and fastest spam filtering as I've seen.
One of the same accounts on Thunderbird is also managed via KMail on my (personal) workstation and I love some features of KMail too but, it doesn't feel as fast and nimble. I keep KMail because of its KDE & Akonadi integration (it continues to process mail even if KMail is not running).
At the end of the day, Thunderbird is an awesome E-mail client. It does everything and doesn't crash even if I leave it open for weeks. 78 integrates lightning so, calendars are well integrated and works flawlessly for me too.
I've also did some enterprise integration work on Thunderbird and it has some nice flexibility options under the hood.
However I need to note that (in my case) all systems it communicates with are UNIX servers (Sendmail, Postfix, Dovecot, et. al).
Of course, YMMV.
I personally don't think it's so terrible - ultimately, the email medium itself hasn't evolved for... never.
Definitely the address book is garbage in any possible way (both in the UX, and in the legendary Mork backend) - one has to use addons in order to get a sane experience.
Additionally, AFAIK, it's so internally tangled that after years, they couldn't make a tabbed email writing window. Another indicative bit: "Plans existed for Mork to be replaced with MozStorage in Thunderbird 3.0."¹.
My biggest worry was actually the addons. There has been a major API change at some point, and several of my addons weren't compatible. Took years for equivalent ones to be developed. Now... another API change (sigh).
One feature I miss is sync. Something like Firefox Sync would be very useful.
Heavily for the past 13 years. Never corrupted a mailbox. I've had to reindex a mailbox once or twice to get search working, but that was many years ago.
I recalling having a problem with excessive CPU use after it's been running awhile (weeks to months.) That seems to have gotten solved at some point; I looked into the problem a bit (strace, etc.) and found the IO multiplexing (select, poll, epoll, whatever) code was spinning. Solution was to bounce it.
My only complaint now is that dark mode isn't fully hammered out. At least not in the non-snap version available in bionic beaver. Anyone know if newer versions have got this right yet?
About 5 years ago I tried other clients, including Evolution and Claws, and stayed with Thunderbird. Evolution's UI was significantly slower than Thunderbird's, Claws and the others were less functional.
I'm really happy Thunderbird development was rekindled, because it was getting noticeably behind. I manage six emails, two calendars and three USENET accounts with it, all in the same application, fast, and using less RAM than it takes GMail to display one inbox.