Mailchimp Integration Pro

Automatically add form submitters to your Mailchimp audiences with merge field mapping and double opt-in support.

What It Does

Giraforms can subscribe contacts to a Mailchimp audience after each successful form submission. You can enable it per form, map your form fields to Mailchimp merge fields, and optionally activate double opt-in for GDPR-compliant list growth.

Capability	Available
Add contact to Mailchimp audience	Yes
Map email field to `EMAIL`	Yes (required)
Map first name to `FNAME`	Yes (optional)
Map last name to `LNAME`	Yes (optional)
Double opt-in	Yes (toggle)

Requirements

Giraforms Pro license active
A Mailchimp API key
At least one audience created in Mailchimp
At least one email field in your form

Setup

Add Your Mailchimp API Key

Go to Forms → Integrations, open the Mailchimp card, paste your API key, and save.

Generate a key in your Mailchimp account under Account → Extras → API Keys.

Enable Mailchimp on Your Form

Edit the page containing your form. Select the Form Container block, open Settings → Integrations, and enable Mailchimp.

Map Audience and Fields

Audience: Choose the Mailchimp audience to subscribe contacts to
Email field: Required — maps to Mailchimp's EMAIL merge field
First name field: Optional — maps to FNAME
Last name field: Optional — maps to LNAME
Double opt-in: When enabled, Mailchimp sends a confirmation email before adding the contact

Test the Flow

Submit a test entry and confirm the contact appears in your Mailchimp audience. If double opt-in is enabled, the contact will be in a pending state until they confirm via email.

Double Opt-in

When double opt-in is enabled, Mailchimp sends a confirmation email to each new subscriber. The contact only joins the audience after clicking the confirmation link.

GDPR tip: Double opt-in is recommended for EU audiences. It provides documented proof of consent and keeps your list free of unverified addresses.

How Merge Fields Work

Mailchimp mapping is form-specific. Each form can target a different audience with different field mappings.

Giraforms Field	Mailchimp Merge Field
Email field	`EMAIL` (required)
First name field	`FNAME` (optional)
Last name field	`LNAME` (optional)

Tip: Use Webhooks alongside Mailchimp to trigger automations or notify other services on the same submission.

Troubleshooting

No audiences shown: verify the API key in Forms → Integrations.
Contact not added: check that the mapped email field contains a valid address.
Contact stuck as pending: double opt-in is enabled — the subscriber must confirm via the email Mailchimp sends.
API error: ensure your Mailchimp API key has permission to manage audiences.

Note: Mailchimp sync runs after successful form submission. It does not replace Giraforms email notifications.

Grow Your Mailchimp Audience Automatically

Use Giraforms Pro to sync form contacts to Mailchimp with GDPR-friendly double opt-in.

Get Giraforms Pro