I've been using mostly Outlook on my M4 Macbook Air since I got it (now on macOS 26.5.2), but I thought I'd kick the tires on the mail app. I like the speed of the app, but I can't get it to consistently work. I had first thought that it was due to having large mailboxes on Gmail and Outlook.com, but I pruned both mailboxes down to 1 year's worth of email, under 1 GB per mailbox. I also tried eliminating Outlook.com completely, so that it is just syncing with Gmail, and with the all mail not advertised to IMAP. I've also limited IMAP to 1000 items in Gmail. Between each of my tests, I've tried restarting the client (there's no rebuild option for Gmail), and even wiping out the Library\Mail directory to reset the database. Nothing has given me a working client. I've been working on email systems since the late 1980's, even before the internet was public. This shouldn't be that hard. Any ideas what's up with this? FWIW, I'm fairly new to modern Macs. I've not been using them since I owned a "fat Mac".