Customer.io Destination

Customer.io lets you send automated email, push, SMS, letters, and webhooks based on your customer’s activities in your app or product. It makes conversion tracking, optimization and remarketing easier than ever. The analytics.js Customer.io Destination is open-source. You can browse the code on GitHub.

This document was last updated on January 26, 2018. If you notice any gaps, out-dated information or simply want to leave some feedback to help us improve our documentation, please let us know!

Getting Started

The first step is to make sure Customer.io supports the source type and connection mode you’ve chosen to implement. You can learn more about what dictates the connection modes we support here.

WebMobileServer
📱 Device-based
☁️ Cloud-based
  1. From your Segment UI’s Destinations page click on “Add Destination”.
  2. Search for “Customer.io” within the Destinations Catalog and confirm the Source you’d like to connect to.
  3. Drop in your Customer.io API Key and Site ID, which you can retrieve from Settings > API Credentials in Customer.io, into the Segment UI Settings.
  4. Alternatively, you can automatically sync your Customer.io connection settings to your desired Segment source by following the flow within the Customer.io Setup Guide.

Page

If you haven’t had a chance to review our spec, please take a look to understand what the Page method does. An example call would look like:

analytics.page();

Page events will be sent to Customer.io as a Page View event where name and properties are optional. In the Customer.io “Activity View”, the event will have “Activity Type” set to “Page View” and “Activity Name” set to the page name. If no page name has been specified, “Activity Name” will default to the page URL.

Screen

If you haven’t had a chance to review our spec, please take a look to understand what the Screen method does. An example call would look like:

[[SEGAnalytics sharedAnalytics] screen:@"Home"];

Screen events will be sent to Customer.io as a custom event. In the Customer.io “Activity View”, “Activity Type” will be event and “Activity Value” will be set to Viewed {screen name} Screen. For the earlier example the “Activity Value” will be Viewed Home Screen. If no screen name has been specifed then “Activity Value” will be Viewed Undefined Screen.

Identify

If you haven’t had a chance to review our spec, please take a look to understand what the Identify method does. An example call would look like:

analytics.identify('userId123', {
  email: 'john.doe@segment.com'
});

For an email to appear in the Customer.io “People View”, you must provide an email as a trait labeled email. Customer.io accepts up to 30 unique traits per identify event. If you exceed this limit, not all of the traits will be passed to Customer.io.

When you identify a new user, the user will be subscribed to Customer.io. If the user is already subscribed, the user attributes will be updated according to the traits provided.

To unsubscribe a user, simply pass in user_id, email and unsubscribed in an identify event. Be sure the user_id and email match the values in Customer.io, which you can find in the “Overview” section under the “Attributes” column within an individual user’s view in the Customer.io UI. Here is an example of how to unsubscribe a user:

analytics.identify('userId123', {
    email: 'john.doe@segment.com',
    unsubscribed: true
  }
)

Track

If you haven’t had a chance to review our spec, please take a look to understand what the Track method does. An example call would look like:

analytics.track('Clicked Button');

Track events will be sent to Customer.io as custom events. In the Customer.io “Activity View”, “Activity Type” will be set to event and “Activity Name” will be set to the event name.

Sending Data from Customer.io

Customer.io supports sending email events to other tools on the Segment platform. These events will be sent as track calls to the other destinations you’ve turned on.

To enable this feature, go to the Account Settings in Customer.io and add your Segment write key:

Send email events from Customer.io

Group

If you haven’t had a chance to review our spec, please take a look to understand what the Group method does. An example call would look like:

analytics.group('group_id');

When you call group, we will associate the user with the provided group_id. You can use this group_id in Customer.io to group your users into “segments”. You will first need to identify the user, then group the user into the appropriate “segment”. If you include any group traits, the traits will be associated with the user, not the “segment”. The names of these traits will be prepended with the ‘Group’ keyword in the user attributes in Customer.io.

Best Practices

Rate Limits

Customer.io has limits on the data collected by their API. To ensure your events arrive in Customer.io, please ensure that you are respecting the limits placed on the Customer.io API. If you are using our HTTP API to send a batch of events to Customer.io at once, make sure you throttle the import to 100-200 requests per second.

Troubleshooting

No Events in Customer.io from the Browser

Remember that before we can send events to Customer.io from client-side Javascript the current user must be identified with both a userId and email. The email address can be recorded as the userId if you don’t have another unique identifier for that user.

Page events not being associated with user

Page events will only be associated to a user if the user has been previously identified in Customer.io. If you identify a user after making Page calls, the previous page events will not be associated to the user in Customer.io.


If you have any questions or see anywhere we can improve our documentation, please let us know or kick off a conversation in the Segment Community!