Polymail - Native email app for email productivity.

Taskful - Deadlines, meet your match.

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

Calendarist - Time blocking companion for Google Calendar

Airmail - Airmail is a lightweight and lightning fast mail client for Mac.

Centered - Centered helps you get into a Flow State faster and stay there longer so you can do your best work.