Identity Synchronization

Information on how to link your identifier for the subscriber to our subscriber profile.

Setting the Subscriber's External ID

Providing a unique User ID for your subscriber allows you to later interact with that subscriber via the API.

Once a subscriber's external ID has been set you may work with our team to set up bi-directional automated data syncs. The following use cases are common ways that publishers use the external ID via server-to-server requests:

  • Sending notifications to individual subscribers programmatically

  • Processing unsubscribe requests

  • Adding and removing profile attributes and events to subscribers

await PushSDK.UserProfile.setExternalId('external-id');

You can also check to see if the subscriber is already tagged with an External ID:

final currentExternalId = await PushSDK.UserProfile.getExternalId();

External ID Restrictions

To prevent subscribers from being accidentally merged via External ID and to ensure integrity in the subscriber documents, Pushly enforces the following restrictions upon External IDs:

  • No empty or strings that contain white-space

  • No identifiers that contain placeholder text: [test, testing, example, guest, anon, anonymous, user, guest, visitor, n/a]

  • No common JavaScript fall-through words or keywords: [[Object ... ], undefined, NaN, Infinity, true, false]

  • Cannot be only punctuation/symbols, must contain alphanumeric characters: [---, ***, -*-, -._+/=:@~]

  • Identifiers should be between 3 and 256 characters in length

A regex playground has been set up for testing the validity of External ID schema.

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