How to Send Ultimate Member Data to Customer.io

Written by Nasir Ahmed
PublishedAugust 2, 2026
Reading time3 min read

Customer.io is a marketing automation platform. Ultimate Member manages a user registers or updates their profile, but sending that data to external platforms needs an integration. AFI bridges that gap to Customer.io.

Why connect directly?

Cloud automation tools like Zapier charge per task and route your data through external servers. AFI processes everything on your WordPress site. No per-registration fees, no external dependencies.

What you will need

  • A WordPress site with Ultimate Member installed and configured.
  • A Customer.io account.
  • The Advanced Form Integration plugin (free from WordPress.org).

Connect Customer.io to AFI

  1. Log in to your Customer.io account.
  2. Go to Settings → API Credentials and copy your Site ID and API Key.
  3. In WordPress, go to AFI → Settings → Customer.io.
  4. Enter the Site ID and API Key, then click Save Changes.

Setting up the integration

1. Create a new integration

Go to AFI → Add New. Name it Ultimate Member to Customer.io.

2. Pick your trigger

Select Ultimate Member as the form provider. AFI fires when a user registers or updates their profile, giving you access to user name, email, username, account type, and custom profile fields.

3. Select Customer.io as the destination

Choose Customer.io from the platform dropdown and pick Add Customer. This creates or updates a customer in Customer.io.

4. Map fields

Match each Customer.io field on the left to the corresponding Ultimate Member field on the right. Common mappings include user name, email, username, account type, and custom profile fields. You can also use smart tags like {{_submission_date}}.

5. Add conditions if needed

Only want to send certain records? Set up a conditional rule based on any field value.

6. Save and test

Click Save Integration. Trigger a test event in Ultimate Member. Check Customer.io to confirm the data arrived. If anything looks wrong, open AFI → Log to see the exact request and response.

Free vs Pro

The free version maps email, name, and standard attributes to Customer.io with unlimited records. Pro adds custom attributes and event tracking. No per-record fees on any plan.

Frequently asked questions

Which Ultimate Member events trigger the integration?

AFI fires when a user registers or updates their profile. This covers new submissions and relevant status changes.

Will adding this slow down my site?

No. AFI sends data to the destination after the event completes. Your site performance is not affected.

Can I send data to multiple platforms?

Yes. Create a separate integration for each destination, and every record flows to all of them simultaneously.

Get started

Install Advanced Form Integration free from WordPress.org and connect Ultimate Member to Customer.io in minutes.

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