Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Gmail - Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
Newton Mail - Newton is a fully featured mail client available for Android, iOS, macOS and Windows.
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
Aqua Mail - Android Mail Client.
Zoho Mail - Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.