Mail issue with MS exchange server on macOS Catalina

Any update on this issue? I've tried all the suggestions, rebuild, synchronize, delete and recreate as well as create a new user and migrate manually. None of these fixes work for more than a few days or weeks at best. I am now back to the same issue for the 6th time - my one Exchange account is not syncing correctly - mail I've deleted or moved to iCloud folders still shows up on iPad, iPhone, iMac and MacBooks - basically the account in question is not being synchronized correctly across my devices. Even the painful migration to a brand new account (which took days to complete) only worked for less than two weeks. Any news or updates would be appreciated?

This is really sad that Apple ignores Apple Mail, which is such an important app - a number of old bugs have come back recently as well, for example when one is moving mail to folders the suggested mailbox is "off by one" it is suggesting for the preceding email in the INBOX - this was fixed a while back and has now returned, sigh. Apple please fix these issues - they are "mission critical" since many of us still depend on mail and I have no desire or willingness to use Outlook. Kind regards and look forward do any news.

Interesting. On my three Macs (2xCatalina and a Big Sur beta), an iPhone running 13.6 and an iPad running 14.0 beta, I am getting my Exchange Mail messages (and calendar events) on both the respective Apple Mail client and the Microsoft Outlook clients. These have been relatively stable for about 4 weeks now. I am also able to schedule meetings on the Apple Calendar and it reflects on the Exchange calendar.

The Catalina systems are fully current.

This is so strange. Again, I wish/hope Apple would be looking at and focusing some debugging effort on these problems.

aps

Surprising. I have about 300 incoming emails a day, about 80 or so from Exchange. I have more than 650k messages. As far as I know, I've not lost an email in about 4 years.

Another thing I try to do is to not keep a bunch of emails in my "inbox" for Exchange; I'm not sure how this contributes to things...

As an FYI, at least in my email, there is what seems to be a set of folders down at the bottom of the folder list specifically for Exchange. They seem to contain Exchange emails I write on (originating from) my iOS devices. I've also found Exchange invites to which I've accepted or not also in these folders.

Regardless, I'm sorry you lost the email; I know how frustrating that can be.

armando

Gotta wonder...

FYI, it has now been 6 and a half weeks and things are still running well: Apple Mail is properly acknowledging or updating email state in the Exchange server (as reflected in an Outlook client).

aps

I've had the same issues with several exchange accounts, but not with IMAP accounts. Clearly something is not going right between mac mail and exchange after Catalina. Has anyone found a solution?

This is broken for me also. Safe mode does not make a difference. Not even using a different user account.

This issue still remains for me after updating to Mac OS 10.15.2

I also have the same issue and I am dissapointed, that there is no explanation or solution or at least a workaround published from Apple or Microsoft.

Yep, same issues still here... migrated to Exchange 2016 and just updated to 10.15.3... no solution unfortunately... :( beh

I have upgraded to 10.15.3. No relief. However, it does seem to be advertised as a security release so, perhaps, there's still some good experiences to come...

aps

Agreed!

after updating my MBP and iMac both to 10.15.3 the issue still persists

I have the exact same issue on a MBPro running 10.15.3.

Same problem as other users, and now on 10.15.4. Please Apple get it fixed v soon and roll out some update for that.

Make sure to report the problem to Apple. It's real pain in the buttocks.