One of the e-mail apps you can find is already installed on your Mac. Apple’s Mail app lets you quickly access and check the messages on all your email accounts with just a few clicks. Not only that, but you can also customize it to improve your experience even further.
Also, as you can expect from Apple’s first-party apps, you can access Mail from any Apple device. All your changes will be saved in the cloud, so you can start working on an email on your iPhone and then finish it later on your Mac — and even use Apple’s handoff feature to pick up right where you left off.
Or better yet, you can ask Siri to write emails for you so you can focus on other important stuff.