My Campus Online supports custom SMS gateway for sending SMS. Its very easy to configure SMS gateway to send customized & bulk SMS at once. Sending SMS is time taking process, therefore My Campus Online pushes the SMS in Queue which is initiated by a cron job.
Make sure, QUEUE_DRIVER variable in your .env file is "database".
Go to Configuration -> SMS Configuration to begin SMS Gateway setup:
For more on this, email email@example.com