[jimktrains2]

I'll have to give it a shot, but the last time I used thunderbird it was unusably slow at pretty much everything. Compacting my folders would help for a day or two, and then it'd basically become unresponsive for 30s or more with any user input.

I hope they focus on performance in coming revisions.

[Mahn]

I keep using Thunderbird because I haven't found anything better, but it's unbearably slow. I'd gladly jump ship to a better cross platform, featureful, responsive email client, but apparently they don't make these anymore.

[qudat]

There’s no money in email clients.

[rajaindia333]

There is actually. They sell at least the following three email clients: 1. Incredimail 2. The Bat 3. Outlook

[everybodyknows]

The sad truth. Likewise Linux desktops.

[reilly3000]

I recently installed it and synced up 5 imap accounts, some with as many as 10 years of mail and its bloody fast. I recall trying it a few years back and was very frustrated that archiving a message seem to block the UI. That is no longer the case and now I’m very fast with it when using keyboard shortcuts.

[mixmastamyk]

Try a new profile, vacuuming it, and/or moving ancient mail to separate folders.

[bastawhiz]

Poor answers to performance problems like this is the number one reason why Firefox lost so much market share to Chrome. Until Mozilla and friends pay attention to user pain, no amount of "creating a new profile" will improve the situation.

Hell, you can search the entirety of the public internet in a fraction of a second, but a few hundred thousand emails locks up your machine for the better part of a minute? Maybe the Rust folks working on parallelism can spend a few sprints giving TB some love.

[mixmastamyk]

Not had the problems you mentioned in ~20 years of usage (Netscape communicator), just brainstormed a few possible solutions. It has always been instantaneous for me.

[beagle3]

Don't trust random me on the internet (I'm dog, woof), google it yourself - but for me deleting "panacea.dat" made everything fast again.

[your-nanny]

For life of me I don't see how what you wrote deserves a downvote