iCloud Mail not syncing across devices

I just tried doing that. Was there another step? Did you restart your phone too? Or your computer?

Thank you. That worked for a couple of minutes and then the discarded email returned

It’s so F’d up that Apple hasn’t handled this problem!!

My IPhone is not syncing up with my IPad mail - it has been working fine until about a week ago - what is the remedy?

Tried this didn't work still does not sync between my iPhone and MacBookPro each using Apple Mail as a email client. Only way to get messages to show as read or as deleted across both devices is to use web mail and directly read and delete from iChloud server. otherwise if I'm reading email on phone and I have to repeat the actions on my Mac. Same is true for other email as well my Google mail has the same issue also using Apple Mail as the email program. So not sure if this is a icloud issue or a Apple Mail issue. anyone else using a different client?

Syncing of mails will occur between iPhones / Mac / iPad when Apple ID is signed as example1@icloud.com " only "

If you are using Apple ID created with gmail services the mails will not sync .

When ever a mail is deleted from a device it deletes from its mail application ( it could be Mac or iPhone ) , if you delete mail from iPhone it will be deleted from iPhone and not from your Mac see the articles https://support.apple.com/en-us/HT208661

https://support.apple.com/en-in/guide/mail/mlhlp1001/mac

If you enter www.icloud.com with Apple ID and password using a web browser the mails from all devices are synced as mail application is configured / turned as on https://support.apple.com/en-in/HT201320

Same way for Mac , the Apple ID is signed in system preferences > iCloud https://support.apple.com/en-us/HT207689

so viewing the universal iCloud.com account for all you devices the mails can be read https://support.apple.com/lv-lv/guide/icloud/mm6b1a0b80/icloud

And deleted from iCloud.com https://support.apple.com/en-in/guide/icloud/mm6b1a7ab7/icloud

But that is different mail you read from one device and delete from it will not delete from Mac / iPhone , however you delete the mail from iCloud.com it will be deleted from the server and will be mirrored ( deleted from all devices ) .

Syncing of mails is done with same Apple ID example1@icloud.com , deleting of mails / reading will be from single device .

If gmail accounts are set up between two devices the mail will not sync , I am back to square one https://support.apple.com/en-in/guide/mac-help/mchl923c1147/10.15/mac/10.15

https://support.apple.com/guide/mac-help/wi-fi-syncing-mchlada1d602/10.15/mac/10.15

Syncing over Wi-Fi is slower than syncing over a cable. If you connect a device to your Mac while the device is syncing over Wi-Fi, syncing continues over the cable. If you disconnect the device’s cable from the Mac while syncing, syncing stops, even if Wi-Fi syncing is on. Syncing resumes when you reconnect the device using a cable or over Wi-Fi.

If you set up same Apple ID and password on devices say eample1@icloud.com the gmail accounts are to be signed in , they never directly sync .

See this https://support.google.com/mail/answer/4780745?co=GENIE.Platform%3DiOS&hl=en

I’ve been living with this Dilemma for years now, I can assure everyone no matter what Apple Support say, the Mail app WILL NOT sync delete, read and flagged Emails until you open the Mail app on each device and pull down to sync OR has the device connected constantly to power.

WE NEED A TRUE FULL ICLOUD SYNC FOR MAIL. I can’t believe Apple could not do that for all those years!! Really!!

why should I go to 3rd party app and compromise my security to get the full sync feature??

I had the same problem - emails no longer syncing between iMac, iPad and iPhone after an upgrade. Tried the usual signing out and in again to iCloud from all devices, didn't work. Solved it by creating a new password on my iMac for iCloud (use the forgotten password link). When you create a new password it will ask you to sign out of all devices i.e iPad and iPhone. You have to sign in again via iCloud settings on all your mobile devices when the iMac has updated the iCloud password. It will also send a 6 digit security code as confirmation to your secured device. This seemed to do the trick - hope this helps

It's been about a week so far since I tried this work around, 9th September and all the devices are syncing as they should. I'm not sure if this problem is caused by a bug in Mail or a bug in iCloud. I had thought it could be Mail so I had rebuilt it's database to see if that worked. Although all the mail was regenerated through iCloud it still wasn't syncing. The above fix seems to be working ok so far. We'll see what happens after a Big Sur upgrade :)

I just updated to iOS 14 on my iPhone and this started happening to me on Mac mail with my gmail account...between my iPad, my phone, and my MacBook, none of them will sync now. I’m having to mark my messages as read manually on each device. I have signed out and back in to iCloud on both devices to no avail.

As difficult as it may be, we should all wean ourselves off iCloud email. Apple doesn’t care and will not direct resources to this problem because it’s not a profit center. This problem has existed for years.

This is exactly why I rarely implement Apple updates. Used to, I was excited for new features and tools. Now, features are missing, things change without notice, things break and it's more of a hassle than a benefit.

@William Franklin

Couldn't have said it better. Prime example, numerous people want to continue using some very good 32-bit programs, but they will not work with the Macbook upgrades to 64-bit. If anyone comes up with a work around it would be greatly appreciated. I know this is off-topic and apologize, but it relates to the issues with Apple upgrades, so please excuse my diversion ;)

Yes I was with Apple Support going these same procedures a couple of days ago. It seem like it worked but now is back by not updating. Also the lag time in refresh is at a crawl. Apple claims there is no server issues. I think the last OS updates must of killed something.