Payment notification

[Tut]

The developer has made his views on this issue known over the years:

SMS gateway integration

I don’t think Manager needs to integrate with any SMS gateway. There are plenty of “email to SMS” services and Manager already allows to send emails. So theoretically it’s already possible to send SMS from Manager. Just google for email to SMS to see what’s out there.

Is there any possiblity to add sms api

Use “email to sms” service for that. See Email to SMS - Send Free SMS via Email for some pointers.