@amolith With that amount of mails, database or profile corruption are not rare, at least in the ones I've had to fix. I think the migration to Thunderbird would be the right path, but anyway you can try some tricks before doing it. In case you haven't seen it: https://khp.ignorelist.com/url/2831991
One of our clients is experiencing really odd issues that we haven't been able to work out yet and we're about to just try putting him on Thunderbird.
He doesn't receive emails automatically; we send one, it doesn't show up, clicking the sync button does nothing, then scrolling to the bottom of his inbox to "Load more messages" does indeed load historical messages, but it also loads the email we just sent him. While clicking the sync button once does nothing, rapidly clicking it 3+ times does fetch new emails.
Logging out then logging back in fixes the issue for about 30 minutes; after that, he doesn't automatically receive anything else.
Rapidly smashing the sync button is an "ok" workaround for now, but he relies on Outlook for receiving timely business-related emails and manually refreshing his inbox every 30 minutes or whatever isn't an option. We rooted around for a couple of hours yesterday and weren't able to fix it. We're going to remote into his Macbook in a few hours to work on it some more and might end up switching him to Thunderbird, but we would prefer keeping him on something he's already familiar with.
Any tips for fixing Outlook would be much appreciated :aichanpeek: