What’s new in Mail on Mac?
The Mail app in macOS Big Sur offers new features for sending, receiving, and viewing email messages.
You can view and manage your favorite mailboxes right in the Mail sidebar.
When you search for emails, it’s easy to see which mailboxes are being searched and quickly select different mailboxes. You can also save a search as a Smart Mailbox right from the Mail toolbar.
You can more easily view and sort messages in column layout.
You can quickly open and use tabs in the Mail window.