Q: Apple mail accounts & boxes Missing

Thanks nokcomputer, you saved several handfuls of my rapidly-thinning hair!

Quite why the user has to manually trigger the rebuild, I've no idea - surely it could have been done automatically as part of the upgrade?!

To those who say this didn't work for them, it could be a case of having to wait a while - mine took about 5 min, maybe more, of apparently nothing happening, and then all of a sudden it all just appeared.  (To be fair, I have thousands of messages in my inbox, so no wonder!)

Trisha,

I thought the rebuild did not work for me, either, but after a while, everything in my inbox reappeared.  Give it some time.

David

I had the same problem. I had to click on the mailbox i wanted to rebuild and it worked. i had a few under inbox as well as sent mail. all were fixed.  and to a previous point, it did take a few minutes for the larger mailboxes.

Thanks, saved lots of work and my night. I can go to bed now!

Thank you, this helped me. Though the rebuild took some time it was not until I quit Mail; then reopened that all the emails reappeared.

Disappointed with Apple that so many have had migration problems!

me too

bad bug, Apple

Hi All, I had a similar problem with all my emails.  I had lost all the sub-folders in 'on my Mac' and tried all the other solutions that had been offered - the subfolders is where I sort all my mail - in short I was knackered and panicked.  I then stumbled across a solution that worked for me.  This has bought back all my accounts and all my subfolders.

1.     I removed and reinstalled all my mail accounts which bough back all mail that is on the email system.

To reinstall all subfolders in Mail - on my mac:

1.     I created a new Mailbox called 'Test' which showed under On my Mac.

2.     I opened Finder and navigated to Library

3.     Under Mail I found the folder in V2 or V3 which had the folder named 'Test' (mine was in V3)

4.     I then copied one of my missing folders that I had found under Mailboxes in V3 into this same folder.

5.     I then deleted all the files named - envelope which forced a rebuild of the entire mailbox and it worked.

6.     Once I had proven it worked for one I repeated steps 4 & 5 with all the missing folders and my on-my-mac had rebuilt perfectly.

7.     You don't have to do them one at a time but can do them all in one go.

I hope this helps either you or anyone else who had the same problem as I did.

Please note:  I'm no expert so I cannot guarantee this is a 100% fault free solution - that said it is 24 hours now and everything appears fine.

Good luck all.

This was my solution !

Thanks !

i tried rebuilding.

it didn't work.

i'm starting to sweat.

I clicked rebuild . . . but if something happened . . . no clue

Anyway next to iCloud is a + button and Show / hide button

I clicked it and all showed up

I don't think any of my mail has been on the cloud. I tried that button and it made no difference. blargh.

I deleted the accounts and then added them as new and voila! There they were. Good job they were gmail accounts...easy as falling off a...

I had tried all the hack fixes in the Library folder to no avail, this worked first time...simple really. Imagine it will only work for external accounts though, dunno

The reply from NickMy2 (laid out nicely in a numbered list) worked out for me too ... Thank you so much as it all looked terribly bleak for a while. I am not yet back to where I was as things are a bit in the wrong place, but 95% looking good. Note to anyone else though ... reading some of the other posts here will help with things like finding the MAIL folder in LIBRARY.

I have been a fan of Apple since taking the leap about two years ago - this issue has knocked my confidence hugely! How can such a user friendly non geaky approach to computing suddenly fall headlong into a pit which makes the Microsoft world look somewhat less complex!

I figured it out without having to do anything crazy.  Go to mail: preferences: accounts and click the little square that says "enable".  If it's already checked, uncheck and recheck.  Voila, all subfiles and mailboxes appear.