Cash App - The easy way to send, spend, bank, and invest.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Facebook Pay - Send money to your friends via Messenger
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
PayPal.Me - Request money using your own personalized URL.
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.