In a partnership that makes so much sense it’s crazy, cloud-focused messaging startups SendGrid and Twilio have teamed up to empower SendGrid enterprise customers with a suite of messaging tools, including transactional emails, SMS, voicemails, and push notifications.

The two companies are already friendly, as I saw first-hand on the “startup bus” that SendGrid and Twilio co-sponsored this past July. Both companies have a passion for developers and robust APIs, as well as providing companies with powerful messaging solutions. Now they are taking their friendship a new level.

Ideally, the new service from SendGrid and Twilio will reduce the cost of building and maintaining a messaging infrastructure for major customers. SendGrid already takes care of transactional and marketing emails that companies need to send out, and it sent out more than 6 billion emails in October. Twilio steps in a provides the back-end solutions for managing texts, voicemails, and other telephony needs.

“We are thrilled to partner with the leading communications API platform provider. Twilio is powering the future of business communications solutions for the enterprise market,” Jim Franklin, CEO of SendGrid, said in a statement. “This multi-messaging platform reinforces our belief in the importance of providing an integrated cloud solution for the enterprise that is cost effective and simple to deploy.”

Boulder, Colo.- and Anaheim, Calif.-based SendGrid has received about $27 million in funding to date. Investors include Bessemer Venture Partners, Foundry Group, Highway 12 Ventures, SoftTechVC, 500 Startups, and Bullet Time Ventures.

San Francisco-based Twilio has raised about $33 million. Its investors include Bessemer Venture Partners, Union Square Ventures, Founders Fund, and 500 Startups.

Photo illustration: Sean Ludwig/VentureBeat