Collect SMS Consent with Custom Opt-In Keywords
Opt-in keywords allow Contacts to subscribe to your brand’s SMS marketing messages by texting a keyword to your toll-free number. Create as many opt-in keywords as you need for specialized content!
Use a short word as your keyword to increase opt-in rates! Keywords can be used as surveys or quizzes to collect information on Contacts' preferences:
The following words cannot be used as custom keywords:
JOIN | JOINSMS | JOINMMS |
JOIN2x | STOP | HELP |
UNSTOP | SUBSCRIBE | OPTIN |
YES | Y | STOP |
Create a Keyword
To create a new keyword, click the Settings icon > SMS > + Keyword > Choose a List that is used as a trigger in an Automation containing SMS.
Legal Language for Opt-In Keywords
This section is for informational purposes only and is not intended to provide legal advice. Contact your attorney to obtain advice with respect to any particular question.
As soon as your opt-in keyword is saved and associated with a List used in an Automation, it is ready to start collecting SMS marketing consent opt-ins. Before adding your opt-in keyword to emails, social media, or print assets, make sure you have consent language ready to go.

Printed or Static Images
Web-Based Advertising
Delete a Keyword
To delete an opt-in keyword, click the trash can icon next to the keyword > Delete Keyword. The deleted keyword will no longer pass through consent to receive SMS marketing materials.