Description

The MailChimp add-on connects the User Registration form to Mailchimp lists and audiences, adding an opt-in box during signup and automatically subscribing each newly registered user as a subscriber to the configured audience. Designed for those who capture leads through WordPress signup and want to power email marketing campaigns without manually exporting a CSV file, it turns account registration into a gateway to your email database.

MailChimp Key Features

  • Mailchimp API connection
    Links the site to your Mailchimp account via an API key generated in the dashboard.
  • Target audience selection
    Lets you choose which Mailchimp list new users will be subscribed to.
  • Opt-in in the registration form
    Adds a subscription checkbox to signup with a customizable label.
  • Automatic subscriber synchronization
    Sends the user’s name, email, and data to Mailchimp when registration is completed.
  • Custom field mapping
    Connects fields from the User Registration form with merge fields from the audience.

MailChimp Benefits

  • Automatic capture of qualified leads
    Each new signup goes straight into the email marketing base with no manual work.
  • Ongoing audience growth
    The Mailchimp list expands at the same pace as site registrations.
  • Clear user consent
    The opt-in checkbox records explicit permission to send messages.
  • Centralized communication funnel
    Combines signup on WordPress and campaign sending into a single connected workflow.

Who Is MailChimp Intended For?

  • Anyone already using User Registration to create accounts on the site and wants to feed newsletter campaigns with no manual work.
  • For those who keep an active audience in Mailchimp and need to supply lists with new WordPress signups.
  • Anyone who captures leads via course signup forms, communities, member areas, or restricted content.

How to Download MailChimp

MailChimp is available for download here on Ultrapack. After downloading the .zip file, go to Plugins > Add New > Upload plugin in the WordPress dashboard, select the file, install it, and activate it. With the base User Registration plugin already in use, the configuration options for the API key and the audience appear on the User Registration settings screen.

By combining user signup with Mailchimp’s email marketing engine, this add-on removes the manual step of migrating contacts between systems. For those who treat site registration as the first step in building relationships with the audience, keeping the audience always up to date becomes an automatic task—freeing up time to focus on creating campaigns and segmentation.

Frequently asked questions

Is User Registration MailChimp GPL-licensed?

Yes. User Registration MailChimp is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.

Can I use User Registration MailChimp on multiple sites?

Yes. You can install User Registration MailChimp on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.

How much does User Registration MailChimp cost at Ultrapack?

User Registration MailChimp costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).

Does User Registration MailChimp include updates?

Yes. The current version of User Registration MailChimp is 2.0.13, published at Ultrapack on Jul 23, 2026. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).

Is User Registration MailChimp scanned before publication?

Yes. Every version of User Registration MailChimp goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.