I am trying to find an api call for sending or queueing bulk sms with a single api call with unique message for each recipient instead of calling twilio api n number of times.
Is there a way to achieving this?
Twilio developer evangelist here.
There is no bulk API for sending personalised SMS messages with Twilio. You can send bulk SMS messages with one API request as long as those messages are the same.
You will have to send one API call per different message you want to send. If you want to speed up this process, you can use a Messaging Service and add multiple numbers to the associated number pool. This will increase the rate at which messages can be sent, allowing you to complete the task quicker.
Let me know if this helps at all.