Canary Mail - Privacy-aware email app for Mac & iOS
HEY - Email at its best, new from Basecamp.
Polymail - Native email app for email productivity.
Sortd - Rated the #1 App for Gmail
ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
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