It’s worth noting that Apple Mail is an email client, while Gmail is considered both an email client and an email service. It comes preconfigured to support many other email providers, including (interestingly) Gmail, Outlook, AOL Mail, Yahoo Mail, and of course, iCloud-the email service most commonly associated with Apple Mail. You can find Apple Mail in app form on almost any iOS device. It relies on SMTP servers for sending messages, POP3, Exchange, and IMAP for message retrieving, and S/MIME for encryption.
Officially, Apple Mail (usually an app simply called “Mail” on Apple devices) is an email client intended for devices with iOS operating systems. Let’s start by explaining what Apple Mail is, and how it compares to Gmail at a high level. Gmail vs Apple Mail and iCloud: The Basics