Aviva is an SMS/Email operator providing value-added services since 2005. Aviva obtained the mandatory licensees of the Spanish Telco Regulatory Body “CNMC” (Comisión Nacional de los Mercados y la Competencia) to offer services as a telecom operator for the SMS and Email services. Aviva's main activities are: -Massive sending of SMS and Email for marketing campaigns. -Trusted Third Party services for: +Electronic notification: Registered SMS and Email keeping documentary evidence of sending and receiving +Electronic signature: for distance contracts signature +Electronic document delivery: keeping records of the sending and the delivering