New users can opt in to receive messages and calls from your business through any of these three options:
- Keyword opt-in: for instance, “text START to 75486 to subscribe to our notification services”
- Web opt-in: Signup through a web form. Users can subscribe to your notification services while registering for an account or by changing their notification preferences in the account settings.
- Paper opt-in: Signup by filling out a paper form at a store or kiosk.
As they do with your terms and conditions page, carriers look for specific language in opt-in web forms. Plivo needs a link to your web form or a screenshot of it to submit your application. If you use a web form, it must include the following language:
- Opt-out and help keywords in BOLD letters
- The short code that will be used to send SMS messages
- The frequency at which the end users will receive messages
- A list of participating carriers
Keywords are mandatory for all services delivered through a short code. Your messaging service must support keywords that trigger opt-in, opt-out, and help commands. When a user texts any of the supported keywords, the service must have an auto-response that contains specific language around messaging frequency and messaging rates.
Here are a few examples:
Response: Thank you for subscribing. Reply HELP for more information. Reply STOP to cancel. Message and data rates may apply. Message frequency may vary per user.
Response: You can email us at firstname.lastname@example.org. Reply STOP to cancel. Message and data rates may apply. Message frequency may vary per user.
Response: You have been unsubscribed from xxx and will no longer receive messages. Reply HELP for help. Reply START to resume services.