Polymail - Native email app for email productivity.

Concur - Automated travel and expense management - your employees, travel managers and finance, too.

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

Certify - Travel and Expense Report Management Software

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

AmTrav - AmTrav is a travel management solution that offers expense management integration, online booking tools to help booking process, travel consultant service, and more.