Convergpay payment Gateway needs to be integrated on core php website with setting up cron job for sending auto emails on payment

Convergpay Payment Gateway needs to be integrated into the core PHP website by setting up a cron job for sending auto-emails on payment.

Only ping if you have good knowledge of payment gateway integration and PHP emails and cron jobs.
Find below developer guide for the gateway

https://developer.elavon.com/na/docs/converge/1.0.0/integration-guide/integration_methods/hosted_payments