Message Systems is the world's #1 email infrastructure provider. Collectively, Message Systems customers, including Pinterest, Zillow, Facebook, LinkedIn, Twitter, Groupon, Salesforce, Marketo, Oracle, Comcast, Time Warner, AT&T and American Express, send over 3 trillion messages a year, more than 25 percent of the world's legitimate email. These prestigious companies choose Message Systems because Message Systems' software outperforms all cloud and on-premise alternatives, and provides the flexibility, deliverability and control they need to drive the highest possible customer engagement for their business.