How to Add a Contact Form 7 Signup to a Mailchimp Audience

A signup form should not need somebody to copy addresses into Mailchimp by hand. Zapify sends each Contact Form 7 submission across with the free A form is submitted trigger and the Add or update a subscriber action. Mailchimp is a Zapify PRO integration.

What this automation does

The automation is one trigger plus one action:

• Trigger: A form is submitted (CF7_FORM_SUBMITTED, Contact Form 7)
• Action: Add or update a subscriber (MAILCHIMP_ADD_SUBSCRIBER, Mailchimp)

Each time the form is submitted, Zapify adds the visitor's email to the Mailchimp audience you choose, or updates their record if they are already in it.

Before you start

• Contact Form 7 installed and active, with a published form that has an email field.
• A Mailchimp account with at least one audience.
• Your Mailchimp API key, from Mailchimp's account settings. Keys end in a server prefix such as -us21 — Mailchimp's own guide shows exactly where to find one.
• The Audience ID (Mailchimp calls it the List ID) — find it under Audience → Settings → Audience name and defaults.

How to build the automation

Step 1: Connect Mailchimp

1. Go to Settings → Connections and click Add New.

2. Choose Mailchimp, paste in your API key, and give the connection a name such as Newsletter Mailchimp.

3. Leave Server prefix empty unless your key doesn't carry one — Zapify reads it from the key automatically.

4. Save.

See Connections for how this screen works generally.

Step 2: Create a new automation

1. In the WordPress admin, go to Zapify → Automations.
2. Click Add New to open the builder.
3. Name it clearly, such as Add form signups to Mailchimp.

Step 3: Add the "A form is submitted" trigger

1. Click Add Trigger.

2. Choose Contact Form 7 as the app.

3. Select A form is submitted.

4. In the Form field, pick the specific form. Choosing a form gives you one token per field on it.

Step 4: Add the "Add or update a subscriber" action

1. Click Add Action.

2. Choose Mailchimp as the app.

3. Select Add or update a subscriber.

Step 5: Configure the action

Field	Required	What it does
Connection	Yes	The Mailchimp connection you set up in Step 1.
Audience ID	Yes	The List ID of the audience to add the subscriber to.
Email address	Yes	Insert the token for the form's email field.
First name / Last name	No	Insert the matching form-field tokens, if your form collects them.
Tags	No	Comma-separated tags to apply, such as website-signup.
Status	No	Subscribed (default) adds them directly. Pending sends Mailchimp's own double opt-in confirmation email instead.

Step 6: Set the steps Live and save

Each trigger and action has its own Live / Off / Draft switch. A new automation starts as a Draft and does nothing until its steps are Live.

1. Set the trigger and every action to Live.
2. Click Save.

Step 7: Test it

Submit the form yourself with an address you control. Check that address in your Mailchimp audience within a minute or two, or open Zapify → Logs to see the HTTP status Mailchimp returned.

Tokens you can use

Once you select a specific Contact Form 7 form, the trigger exposes these tokens. Insert them anywhere in the email with the {} button.

Token	What it holds
Form ID	The numeric ID of the submitted form.
Form title	The form's name.
Submitted at	The date and time of the submission.
All fields	Every submitted field rendered as one labelled block — handy when you just want the whole submission in the email.
One token per field	The value the visitor entered in that field, named after the field's tag (for example a your-email tag becomes a your-email token).

Multi-value fields such as checkbox groups are joined into a readable, comma-separated list.

Conclusion

With the free A form is submitted trigger and the Add or update a subscriber action, every signup reaches your Mailchimp audience without a manual export. To do the same for new accounts, see adding a new WordPress user to a Mailchimp audience.

FAQs

Is this free in Zapify?

The trigger is free. Add or update a subscriber is part of the Mailchimp PRO integration and needs an active Zapify PRO licence and a Connection.

What happens if the person is already subscribed?

Mailchimp updates their existing record instead of failing — the action addresses subscribers by their email, so running it again for the same person is safe.

Where do I find my Audience ID?

In Mailchimp, go to the audience, then Settings → Audience name and defaults. Mailchimp calls it the List ID there.

My connection fails with a server-prefix error. What does that mean?

Every normal Mailchimp key ends in a datacentre suffix, like -us21, and Zapify reads it from the key automatically. If your key doesn't carry one, add it explicitly in the Server prefix field on the connection.

Do I need to write any code?

No. Everything is set up visually.