Twicsy - Twicsy provides the latest updates on the ever-changing world of social media marketing.
Stannp - Stannp helps to create and send postal Direct Mail campaigns: letters or postcards.
Sociallyin - Sociallyin uses creative techniques to increase the sales revenue of a business.
Lob - A simple API to integrate print & mail solutions into your applications.
LYFE Marketing - A leading social media management company that helps businesses grow online. We help increase leads and sales for businesses through social media marketing
Docsmit Mail - Send USPS Certified, Priority and First Class mail from Windows, Word or Web. API too.