Can you add a typical option for sms ( Offer an unsubscription solution to your customers. The management of STOP is automatic, the numbers are directly added to a black list. and Can not send him more message And the possibility of sending a confirmation message that his number to good was blacklist)
And RGPD compliance
And calback functionnality
If there is it will work in addition
This functionality is available in v5.0. You can download it from CodeCanyon. Please rate the SMS Gateway on CodeCanyon. It will help me a lot.