![](/images/whats-new/preference-center-opt-in-email-sms_hu114078546786510851.webp)
Preference Center Opt-In Support for Email and SMS
Grow your email and SMS audiences from your app’s Preference Center. Users can self-manage their email addresses and phone numbers alongside their notification preferences.
In an App Preference CenterA page where users can manage their opt-in statuses for the Subscription Lists in your project. Preference Centers are presented within your app or website or as an Airship-hosted web page., now you can add notification opt-in prompts for Email and SMS. Just like our App and Web opt-in prompts, they appear as embedded banners within a Preference Center. All labels and fields are fully customizable.
![Preference Center Opt-In Support for Email and SMS Preference Center Opt-In Support for Email and SMS](/images/whats-new/pf-sms-opt-in.png)
Opted-in addresses and phone numbers associated with a Named UserA customer-provided identifier used for mapping multiple devices and channels to a specific individual. are listed within the banner. Addresses or numbers added by the user are automatically associated with their Named User ID, allowing for cross-channel messaging.
Users can add email addresses or phone numbers in order to opt in, add other addresses or numbers, or remove their contact information in order to opt out. They must complete the Double Opt-InA process where users who sign up for messaging must confirm opting in before they can receive messages. process in order to start receiving messages.
Requirements and documentation
Required for Email and SMS opt-in prompts: iOS SDK 18.6+Android SDK 18.1.2+
Get all the details about notification opt-in prompts and how to configure them in our Preference Centers user guide. Learn how double opt-in works for Email and SMS in our platform documentation.
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