The Clickatell SMTP API allows you to send an email to the Clickatell server, send bulk SMS, connect to the SMS Gateway and send email to SMS. SMTP provides connectivity from the legacy server, particularly server-generated e-mail. It is useful for notification alerts and provides support for extended length messages, converters, delivery acknowledgements and more. SMTP also provides access to gateway escalation and queuing. All the Clickatell API’s support text, Unicode, binary SMS and flash messaging, providing a way to send SMS messages around the world to clients, staff or user-database. Clickatell covers over 819 networks in more than 220 countries. Connecting you to the wireless world through simple integration while offering customization and personalization.