Skip to main content



Since 1999 Esendex (formerly known as CDYNE Services) has been a premier provider of Data Quality and Communications Web Services. We employ API technology to ensure cross-platform capability and easy integration. Our APIs are used to help prevent fraud in real-time, scrub and enhance data, or allow fast and easy contact in any situation. Esendex Web Services automatically process information from Esendex 's vast databases that are constantly updated with the most current information available. Our transaction-based billing model saves you money - clients pay for only what is used, with no hidden fees. Our Short Code capable SMS Notify! API allows our customers to send and receive up to 9,000 messages per minute with no daily message limit. Esendex handles the provisioning process for you and provides a DID for immediate testing.