Mail User Guide
Rebuild mailboxes in Mail on Mac. You may need to rebuild a mailbox to update the list of messages it contains. For example, if messages appear to be missing or garbled, or if you can’t find all relevant messages when you search using the Entire Message search option. Outlook for Mac does not support Auto-mapping of shared mailboxes. A folder is shared with you. If another user has shared an inbox, primary calendar folder, or primary contact folder with you, use this method to open the user's folder. To open the shared folder: On the File menu, click Open.
You may need to rebuild a mailbox to update the list of messages it contains. For example, if messages appear to be missing or garbled, or if you can’t find all relevant messages when you search using the Entire Message search option.
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- In the Mail app on your Mac, select a mailbox in the sidebar.
- Choose Mailbox > Rebuild.
When you rebuild mailboxes for IMAP or Exchange accounts, messages and attachments stored on your computer are discarded, and then downloaded again from the mail server to your Mac. Your mailbox appears empty until the download is complete.
![Inbox Inbox](/uploads/1/1/8/6/118659688/976831828.png)
Inbox Gmail Mac Os X
See alsoIf emails appear to be missing in Mail on Mac