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How to best export mailboxes from El Capitan in order to import in Catalina? Apple official instructions apply only back to Sierra: https://support.apple.com/en-ca/guide/mail/mlhlp1030/mac
Specifically, I have MacBook Pro 13-inch mid-2009 stuck at El Capitan. I want to import its mailboxes unto a new MacBook Air 13 2019 running the latest version of Catalina.
Any advice will be appreciated!
MacBook Pro 13", OS X 10.11
Here’s what I ended up doing:
1) El Capitan was cloned on an external harddrive
2) External HD was connected to the new machine running Catalina
3) On Cataline, within the Mail App > Import Mailboxes... > choose “Apple Mail” continue > navigate to the external HD and find user/library/mail
4) Import
All the mailboxes from the old machine (in my case running El Capitan) will then be imported in a seprate folder within Mail.
Here’s what I ended up doing:
1) El Capitan was cloned on an external harddrive
2) External HD was connected to the new machine running Catalina
3) On Cataline, within the Mail App > Import Mailboxes... > choose “Apple Mail” continue > navigate to the external HD and find user/library/mail
4) Import
All the mailboxes from the old machine (in my case running El Capitan) will then be imported in a seprate folder within Mail.
Import or export mailboxes
