UCx SMS/MMS Upgrade

A better messaging experience is on the way!

We’re upgrading UCx SMS with new features that give you more control, more convenience, and more ways to connect. This enhanced experience introduces a new embedded app for both Webex and Microsoft Teams along with several new messaging capabilities that make everyday communication easier.

You won’t lose any of your existing message history. Your existing messages will remain available in Webex and those conversations will also be available in the new app. New conversations will automatically use the upgraded experience.

What's New

The upgraded messaging experience includes several improvements designed to support how your teams communicate:

• MMS and group messaging
• Scheduled messages
• Message broadcasts & templates
• Faster delivery and improved reliability
• A new embedded app for Webex
• UCx SMS/MMS is now available for MS Teams

What to Expect

On December 16, you’ll receive an activation email with a setup link for the new embedded app. Once activated, your SMS services will continue in the upgraded environment. All existing conversations will remain visible in Webex, and new messages will be sent and received through the new platform. 

Your upgrade took place on December 16, 2025, during a maintenance window between 4:00 AM and 7:00 AM Eastern. You may have experienced a brief interruption in SMS availability during this time.

After the upgrade, you may want to confirm: 

• The embedded SMS app is activated in Webex
• Your SMS enabled numbers appear correctly
• Any internal workflows or documentation reflect the new tools

Getting Started

Step 1: Complete your account setup

1. After migration, you’ll receive an email titled Complete your account setup on ContextSMS. It includes a six-digit verification code and a link to set your password.

2. In the email, click the “Set Up My Password & Get Started” button.
3. On the resulting webpage, enter the verification code from the email and create your password for the new system. Click the “Set Password” button.

Step 2: Add the ContextSMS app to Webex

1. In the Webex desktop or web app, click the “App Hub” icon in the left sidebar. It may be nested under the icon with the three dots.

2. Search for “ContextSMS – Seamless Texting”. Ensure that you select the version with the blue icon and “… – Seamless Texting” at the end of the name. You can also go directly to the correct app by clicking here: ContextSMS – Seamless Texting.

3. Click “Add to sidebar”

4. You’ll now see the ContextSMS icon in your sidebar.(Note: Your administrator may preload the app on your Webex client. Also, if the “Add to sidebar” link is disabled or you see “Access is turned off”, please contact your IT administrator or the TPx support team).

If you don’t receive the email with the verification code or if the code has expired, you can request a new code by clicking “Forgot password?” within the new ContextSMS app on your Webex sidebar.

Step 3: Login and Verify

1. Click the ContextSMS icon on the Webex sidebar.
2. On the login screen, enter your email and the password you set in Step 1.
3. Your new messaging dashboard will now open.
4. Your existing conversations will be visible in the new app.