Web SMS is the sending of SMS, and optionally the receiving of SMS, via a web portal using a web browser. The user would login to the portal and be able to create a message and send it to one or more mobile users. Distribution lists and phonebooks can be used to address the message. A web SMS service can be used to send to a very high number of recipients. Replies to messages, or new messages sent by mobile users, can be viewed in an inbox within the portal.
See Melrose Labs Tyr SMS Gateway/WebSMS
Melrose Labs: Our mission is to deliver pivotal services in cloud communications across mobile, fixed-line and internet for enterprises of all sizes. Through these services, we help businesses and other organisations communicate better with their staff and customers, and by doing so increase their success.