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Configuring Sender ID and Opt-Out Language for SMS Compliance

Overview​

Stack is committed to helping you ensure that your SMS communications comply with regulatory standards, such as A2P 10DLC in the United States. To support your compliance efforts and safeguard your messaging reputation, we've enhanced the SMS compliance settings for sender ID and opt-out language. These updates ensure that the first message in every conversation, including Missed Call Text-Back (MCTB) and review requests, contains the necessary sender identification and opt-out language unless it's already included.

What's New in SMS Compliance​

  • Mandatory Inclusion: The first message in any SMS conversation will automatically include sender ID information and opt-out language (e.g., “Reply STOP to unsubscribe”) if it’s not already present.
  • Opt-Out Logic: Opt-out language will only be added if the message does not already contain opt-out wording.
  • UI Improvements: We've updated the user interface in the SMS Compliance tab under Advanced Settings for a clearer and more intuitive experience.

These updates ensure compliance, reduce the risk of messaging restrictions, and streamline your SMS operations within Stack.

How to Access and Configure SMS Compliance Settings​

  1. Log in to your Stack account.
  2. Go to the Phone Numbers page.
  3. Click on Advanced Settings in the top menu.

Locate SMS Compliance​

  • Under the Advanced Settings tab, find the SMS Compliance section.

Review the Options​

You’ll see two checkboxes under “SMS Compliance Customizations and Opt-Out”:

  • Make SMS compliant by adding an opt-out message: This ensures every first message includes opt-out language (e.g., “Reply STOP to unsubscribe”). The default text is “Reply STOP to unsubscribe,” but you can customize it by clicking the Customize button.

  • Make SMS compliant by adding sender information: This adds sender identification (e.g., your business name or contact info) to the first message. The default text is “Thanks, [YourName] at [YourBusiness],” but you can customize it by clicking the Customize button.

Note: If your message already includes opt-out language or sender info, Stack won’t duplicate it.

Customize Text (If Allowed)​

  • Click the Customize button next to each checkbox to edit the default text for opt-out messages or sender information.
  • Ensure your custom text meets regulatory requirements (e.g., clear opt-out instructions like “Reply STOP to unsubscribe”).

Save Changes​

  • After making adjustments, save your settings to apply them to your SMS communications.

Why These Changes Matter​

  • Compliance: Adding sender ID and opt-out language helps you adhere to A2P 10DLC regulations, preventing messaging restrictions or penalties from carriers.
  • User Trust: Clear sender information and opt-out options build trust with recipients, improving engagement and reducing complaints.
  • Automation Safety: Features like Missed Call Text-Back and review requests are now automatically compliant, saving you time and effort.

Troubleshooting and FAQs​

Q: Can I disable sender ID or opt-out language?
A: No, if you’re managing a location less than 15 days old or an Account User/Admin, you cannot disable these options. This is to ensure compliance during critical setup phases.

Q: What happens if my message already has opt-out language?
A: Stack will not add duplicate opt-out language. It checks the message content and only appends the required text if it’s missing.

Q: How do I customize the opt-out or sender text?
A: Click the Customize button next to each checkbox in the SMS Compliance section to edit the default text. Ensure your custom text is clear, concise, and meets regulatory standards.

Q: What if I don’t see the Customize button?
A: If the button is unavailable, it’s likely due to restrictions (e.g., new location or user permissions). Contact your account owner or Stack support for assistance.

Need Help?​

If you encounter issues or have questions about SMS compliance, reach out to our support team via the Stack Support Portal or contact us directly. We’re here to ensure your messaging remains compliant and effective!