How Do I Import or Export Apple Mail Mailboxes from Catalina Macos 10.15

Mike Lucanc | how to Mac OS Queries | 2 minutes read | Modified on: 18-01-2022

Here you can get information about how can you import and export MBOX mailboxes from Catalina MacOS 10.15 manually. Mailboxes from Catalina Macos 10.15 can be imported e-mail message files that have been exported in .mbox file format from other e-mail clients, and import mailboxes exported from MacMail. You can export emails mailboxes in MBOX format on Mac.

Import mailboxes to Mail App on Macos 10.15 Catalina

1. In the Mail app on your Mac Machine, choose File > Import Mailboxes.

2. Now select a source in the list and read the information that appears below the list, now click Continue.

• While importing a Mac mailbox exported from Mail or a folder in the ~/Library/Mail/ folder on another Mac, select Apple Mail. To get to the Mail folder on a Mac, click the Mac desktop to make sure you’re in the Finder, now press and hold the Option key, choose Go then, Library, then select the Mail folder.

• If you’re importing e-mail messages from a Windows Operating System or UNIX machine, select “Files in .mbox file format”, then locate the folder containing the files.

3. If you like you can reorganize the MBOX imported messages.

The messages are in a new mailbox called Import in the Apple Mail sidebar. You can easily drag folders and messages from the Import mailbox to new or existing mailboxes after that delete the Import mailbox.

Note: Now, you have an MBOX file into your Mail App on Catalina

Export mailboxes on Macos 10.15 Catalina

1. In the Apple Mail app on your Mac, select one or more Mac mailboxes, then choose Mailbox > Export Mailbox.

2. Create a new folder or choose an existing folder, then click > Choose.

Apple Mail exports the mailboxes as .mbox files. If you previously exported a mailbox, it doesn’t overwrite the existing .mbox file; it creates a new .mbox file, such as My Mailbox 4.mbox or My Mailbox 5.mbox.

Note: Now, you have exported Mailboxes of Mail App on your desktop local.

If you are looking for a solution that would help you convert MBOX Mailboxes to other file formats. Then you can give a try to Mac MBOX Migrator Tool. Provide you the option to Convert Mailboxes of Catalina Mail App to PST, PDF, HTML, EMLX, EML, etc. One more advanced feature about this software is it allows you to Import Mail App mailboxes to Office 365, IMAP,, Gmail, yahoo.