How to automatically send birthday sms to clients

I want to sent sms of birthday greetings to my clients automatically on their birthday. My questions are:

  1. Which sms service is reasonable.
  2. How to setup the sms service to automatically send sms on clients birthday/anniversary.
  3. Please guide step by step. I don’t know coding.


  • MSG91 is a reliable SMS Service Provider in India.
  • The feature of automatically sending SMS on a particular day will require custom development. You can hire a ERPNext developer ( and have the feature merged into ERPNext.