Why is the Windows 10 Mail app so slow?

theloft said:

Followed these and my Settings for Mail is completely blank and yet gmail updates after about 10 minutes. Not happy!

Have you made sure you have got the latest updates installed also should load straight away or could be your AV slowing it down I use Defender and that seems to let it through ok

I replaced WLM that had been used since early in W7, with W10 Mail and Calendar. WLM had begun having issues with emails from social media platforms in that it would lock up and require rebooting to get the system back. W10 was slow to perform even things like moving an e-mail to another folder. Mail also couldn’t print e-mails either. A M$ support thread that ran for four years indicated that M$ was not going to do anything. Finally gave up on both apps. and installed Thunderbird. No issues with speed, nor e-mails trashing things.

davidhk said:

mbratch,
It might take some time, but please post back if you have found a solution.
If yes, which solution ?
If no, do you go back to T-bird and chose something else ?

It's been about 4 years now. Although they seemed to have fixed some other oddities, Windows 10 mail still has a few quirks. It seems to be faster. But in the last couple of days, it stopped being able to retrieve my gmail. It would try syncing for a long time, and then finally say "sync failed" without explanation. I had to delete the account and re-add it, without changing any of the settings, and then that got it working again.

I have tried other email clients. Thunderbird seems to be the best alternative in terms of features. The UI is a bit antiquated, but it's my backup whenever Windows 10 Mail misbehaves.