SMS via Email

Hi,

So I wanted to find out if anyone knows the email address associated with Business SMS. I have done some searches, and it seems like this feature is not supported at the moment. For example, AT&T uses PHONENUMBER@txt.att.net. Perhaps it is PHONENUMBER@txt.ringcentral.com or PHONENUMBER@sms.ringcentral.com... I have no way of testing it. Thanks in advance for your help.