Text Forward is a feature that enables a number, or numbers, on your account to forward to an email or webhook when that number receives a text message. This can not be applied to numbers that are already using VirtualText at this time.
Once the feature is turned on, hover over the black bar on the three line menu to choose ‘Messaging’

The Messaging page is where you’ll be able to view VirtualText, Text Numbers, and VirtualText Forward.

Choose VirtualText Forward
Add Number

Please note MMS is sent as an attachment on emails and is not available in your webhook’s payload.