Sending Emails to Apple Private Relay

Braze customers who use Sendgrid as an email provider can now, essentially, “whitelist” with Apple without having to make DNS changes.

Go to your Apple Certificate page and whitelist the email address you wish to use for sending via Apple’s Email Relay Service (your desired From address).

Whitelabel the Address

To find the proper address, go to your Sendgrid DNS record and copy the UID, Whitelabel Subdomain, and Domain from the Host Value column.

HOST Value DNS Records

The address should be formatted as:


For example:

Once added to your Apple Certificate page, emails from this From address domain will be delivered via the Apple Private Relay system.

If you have any further questions, please submit a support ticket.

From Address Components for Whitelisting with Apple Email Relay

Value Description
UID This value is provided by Sendgrid in your DNS records. Do not include the “U” character in your UID in the email address you whitelabel. For example, if your UID is presented in Sendgrid as, then 1234567 is the UID value.

You can also ask your Braze representative to provide your UID, if you do not have access to your DNS records.
Whitelabeled Subdomain and Domain This is the initial domain and subdomain you entered into Sendgrid. You can also use the HOST value in your DNS Records in Sendgrid.

HOST Value DNS Records

What is the Apple Private Relay System?

With the recent iOS 13 release, Apple has introduced new functionality for Apple customers, which impacts how email is sent to them. The new Apple single sign-on (SSO) feature allows Apple customers to share their email address ( or to hide their email address, in which case a “masked” email address ( will be provided to brands (as opposed to the user’s personal email address).

Disable forwarding

Users can manage the apps using Sign In With Apple from their Apple ID settings page (see Apple’s Documentation).

Should a user choose to disable the email forwarding to your app’s relay email, Braze will receive email bounce information as usual.

New Stuff!