Lob - A simple API to integrate print & mail solutions into your applications.
Zoom - Equip your team with tools designed to collaborate, connect, and engage with teammates and customers, no matter where you’re located, all in one platform.
PostGrid - Transform your Offline Communications. Use our fully-documented REST API to send personalized letters, checks, postcards and improve address accuracy.
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
AmazingMail - Business print-mail solution
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.