SwiftSend is a web app which is help you to reach more customer on single click. This is the bulk messaging and mailing app which is use to communicate with more people in very short time and also provide some additional feature like workflow automation ,contact management.
SwiftSend also provide API Docs to integrate with other apps which provide API for message mail and contact management.
Additionally, SwiftSend provide support ticket service which can use customer to solve their issue regarding the web app and also it is available 24X7.