Add Link Shortening content

Author: rchinn1

src/engage/content/sms/template.md

@@ -50,6 +50,25 @@ Engage inserts the selected traits inside merge tags based on cursor placement i
 > info ""
 > To learn more about profile traits, visit Segment's [Computed Traits](/docs/engage/audiences/computed-traits/) and [SQL Traits](/docs/engage/audiences/sql-traits/) documentation.
 
+## Configure Link Shortening
+
+Use Link Shortening to send shorter, more manageable link URLs in your Engage SMS campaigns.
+
+Configure Link Shortening in your [Twilio Console](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening){:target="blank"} in six steps:
+
+
+1. [Set up an Organization](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-1-setting-up-an-organization){:target="blank"}
+2. [Register Domains](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-2-registering-domains){:target="blank"}
+3. [Add Domain Name System (DNS) records](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-3-adding-dns-records){:target="blank"}
+4. [Generate a TLS certificate](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-4-generating-a-tls-certificate){:target="blank"}
+5. [Upload your TLS certificate](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-5-uploading-tls-certificate){:target="blank"}
+6. [Configure fallback and callback URLs](https://www.twilio.com/docs/messaging/how-to-configure-link-shortening#step-5-uploading-tls-certificate){:target="blank"}
+
+Once you've configured Link Shortening, Twilio automatically shortens the link URLs that you send in your SMS messages.
+
+> info ""
+> At this time, Link Shortening is only available for SMS messages.
+
 ## Clone an SMS message template
 
 You can clone existing SMS templates to edit and use in your message campaigns.