Twilio is a recent addition to the plugin (v2.7019) as a Bulk SMS service, which allows you to handle replies on your website. First sign up for Twilio with this link which gives you $10 free when you add credit.
You need to purchase a cell number once you have verified yourself using the Buy a Number button on the top right corner
Then you will be able to do a webhook to listen for SMS replies.
Go back to https://www.twilio.com/console/phone-numbers/incoming and click on your number
Then scroll down to this section
Where is says “A MESSAGE COMES IN”, make sure the dropdown is “Webhook” and paste in the URL and click Save. That’s it!
https://YOURDOMAIN/wp-admin/admin-ajax.php?action=church_admin_twilio_listener
The URL is on the Twillio Replies page on your website Church Admin>Communications> Twilio Replies