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Mail cannot save information about your mailboxes because there isn't enough space in your home folder

Mail will not open since Catalina upgrade. Receive this message and I have tried all the older solutions with previous Mail OS update issues. This message pops up when attempting to import mail messages. "Mail cannot save information about your mailboxes because there isn't enough space in your home folder". Same message when I attempted the index fix from past. What is the current fix for this?

iMac Line (2012 and Later)

Posted on Oct 8, 2019 9:49 PM

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Question marked as Top-ranking reply

Posted on Oct 10, 2019 1:05 AM

FYI: For reference, if the link dies for some reason, point 3 was:


Try to reset Mail settings. - which you will need to set up after following:

Quit Mail, then go to Finder and press ⇧⌘G and enter (or copy) the following:

~/Library/Containers/com.apple.mail/Data/Library/Preferences

Look for "com.apple.mail.plist" and drag it the Desktop, then restart Mail.

151 replies

Mail cannot save information about your mailboxes because there isn't enough space in your home folder

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