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 favourite mailboxes 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 directly 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.