Tier 1
Tier 1 SMS aggregators maintain direct short-message peer-to-peer (SMPP—an industry protocol for exchanging SMS messages) connections and premium settlement agreements with at least four of the five major U.S. wireless carriers (AT&T, Sprint, T-Mobile, US Cellular, and Verizon). They support carrier-grade SMS and MMS capabilities and provide a high-level 24/7 service agreement. They publish content only where the rights to that content are clearly owned by the customer (e.g., they won't knowingly plagiarize or spam).
Ericsson www.ericsson.com
mBlox www.mblox.com
Mobile Messenger www.mobilemessenger.com
Motricity www.motricity.com
Openmarket www.openmarket.com
Sybase 365 www.sybase.com
Velti www.velti.com
Vibes Media www.vibes.com
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