Mail supports multiple accounts and allows you to filter messages into smart mailboxes and create VIP senders.
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ne of the best things about Mail is that it can be as simple or as complicated as you want. If you use it with just one iCloud account and don’t send or receive a lot of email, you can leave preferences set at their defaults and just have a two-pane interface with the list of messages in your inbox in one, and the current message in the other. If you enable Show Favourites bar, you’ll be able to switch between your inbox, sent mail, drafts, flagged messages and VIPs easily, even without the mailbox list displayed.