Expo

Profile Requirements

To deliver a push notification to a recipient over Expo, Courier must be provided the recipient's Exponent push token. It should be included in the recipient profile as expo.

Single Token

To push a notification to a single device, you can pass the recipient's push token as a string to expo.token.

// Recipient Profile
{
  "expo": {
    "token": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]"
  }
}

Multiple Tokens

If the recipient has multiple devices and you'd like to push to all of them, you can pass the push tokens as an array of strings to expo.tokens.

// Recipient Profile
{
  "expo": {
    "tokens": ["ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]", ...]
  }
}

Providing both token and tokens to expo

If you pass values to both token and tokens, Courier will merge the value of token into the tokens array and dedupe it.

Override

You can use a provider override to replace what we send to Expo's API. For example, you can add a ttl value and turn off the sound with your send request:

{
  "event": "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
  "recipient": "abc123",
  "profile": {
    "expo": {
      "token": "ExponentPushToken[xxxxxxxxxxxxxxxxxxxxxx]"
    }
  },
  "data": {
    "dataForPushMessage": true
  },
  "override": {
    "expo": {
      "ttl": 10,
      "sound": null
    }
  }
}

Everything inside of override.expo will replace what we send to Expo's API. Values that are not replaced will still be sent (the title, subtitle, body and data will still be generated and sent in the example above). You can see all the available options by visiting Expo's website.

Tracking Events

Courier will include tracking URL information in the data attribute on the incoming message payload.

See Courier push notification tracking