Gmail

Gmail is still one of the strongest email apps on iPhone. It supports multiple accounts — and not just Gmail accounts — has a strong built-in search, and stays tightly connected to other Google services like Calendar, Drive, and Docs. That makes it much more useful than a plain email inbox for people who are already living inside Google’s ecosystem most of the day.

One of Gmail’s biggest strengths is how fast and easy it is to search and work across devices. Email is one of those things that can quickly become frustrating when the app feels slow, cluttered, or awkward when you move between phone and desktop. Gmail generally avoids that problem. If you already use a Gmail address, the official app remains one of the easiest ways to keep track of all your mail, no matter which device you’re using.