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 The Bottom Line: Should You Choose Gmail or Apple Mail?.Gmail vs Apple Mail: Security and Reliability.Gmail vs Apple Mail: Addons and Extensions.