Apple mail show all inboxes

To show all inboxes in Apple Mail on a Mac, follow these steps:

1. Open Apple Mail.
2. Click on "Mail" in the top menu bar.
3. Select "Preferences" from the drop-down menu.
4. Click on the "Accounts" tab.
5. Select the account you want to show all inboxes for from the list of accounts on the left side of the window.
6. Click on the "Advanced" tab.
7. Check the box next to "Show all inboxes" at the bottom of the window.

Alternatively, you can also use the keyboard shortcut "Command + Shift + A" to toggle the "Show all inboxes" option on and off.

Note: This option is only available if you have multiple email accounts set up in Apple Mail and you want to view all of their inboxes at the same time.

If you're using Apple Mail on an iPhone or iPad, you can't show all inboxes at the same time. Each account has its own separate inbox, and you can switch between them by tapping on the account name at the top of the screen.