MacOS – Apple Mail Mailboxes missing

macosmail.app

Apple Mail crashed and I rebuilt the database. It now works but my mailboxes are missing. How can missing mailboxes be restored?

Best Answer

The only way this can be restored if you have a Time Machine backup or another backup which included mail.

Restore items backed up with Time Machine on Mac

This way all MailBox folders and messages will be restored.

If you set up Time Machine to back up files on your Mac, you can use the backups to restore lost mailboxes and email messages.

https://support.apple.com/guide/mail/restore-mailboxes-and-their-content-mail15172/mac

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MacOS Mail – Apple Mail Not Saving Smart Mailboxes

I filed a radar (rdar://13700673) with Apple and after a few mails back and forth they figured out how to solve the problem:

chmod -a 'everyone deny write,delete,append,writeattr,writeextattr,chown' ~/Library/Mobile\ Documents/com~apple~mail/Data/MailData/* ~/Library/Mobile\ Documents/com~apple~mail/Data/MailData/Signatures/*

Looks like I had some permission issues on that files.

Accept/Maybe/Decline Missing in Apple Mail

Open the Contacts app, select your own email address in the list of contacts. In the menu on top of the screen, go to "Card" -> "Make this my card". Reload calendar. Then it should work, you will get a notification popup with accept/decline buttons. (I just had the same problem, on a Mac running Yosemite) Source

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MacOS Mail – Apple Mail Not Saving Smart Mailboxes

Accept/Maybe/Decline Missing in Apple Mail

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