// ChimpFuse.
Contact Form 7 → Mailchimp - Made Simple
Seamlessly connect your forms to Mailchimp. No code, no API hassle — just plug, map, and grow your list automatically.
Because connecting CF7 to Mailchimp shouldn’t require a developer.
Unlimited Site License
£59
/ year
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- Simple setup - install, authorise, map fields.
- Lightweight - no bloat, just performance.
- GDPR-friendly with consent suppor
// Key Features.
Field mapping.
Match CF7 inputs to Mailchimp tags easily
Double opt-in support.
Stay compliant with best-practice marketing.
Multiple list support.
Connect different forms to unique lists.
Error logging.
See exactly what’s syncing (and what’s not)
Install the plugin.
Activate from your WordPress dashboard.
Connect to Mailchimp.
Paste your API key and choose your audience.
Map your fields.
Match CF7 fields to Mailchimp tags — and you’re done.
// Frequently Asked Questions.
Below are some common questions about using ChimpFuse, along with concise answers to help you get started
Does ChimpFuse support double opt‑in?
Yes. When configuring a form you can choose Pending as the subscription option. This triggers Mailchimp’s double opt‑in workflow and sends a confirmation email to the subscriber. If you select Subscribed, contacts are added immediately without confirmation.
How do I map my form fields?
Edit your form in Contact Form 7 and open the ChimpFuse Mailchimp panel. For each form field, choose the corresponding Mailchimp merge field (e.g. Email, FNAME, LNAME). Mapping the email field is mandatory; other fields are optional.
Can I tag subscribers automatically?
Absolutely. In the same panel you can add one or more fixed tags or dynamic tags using form field placeholders. For example, entering VIP, {{your-dropdown}} will tag every new subscriber as “VIP” and also apply the value chosen in your drop‑down field.
What happens if Mailchimp is offline?
ChimpFuse logs the error but does not interrupt form submission. Your Contact Form 7 form will still email its contents. You can review the error log in Settings → ChimpFuse to investigate issues.
Is it GDPR compliant?
Yes. You can add an opt‑in consent checkbox to your form. Only when the checkbox is ticked will ChimpFuse send the subscriber’s details to Mailchimp. Without consent, the form submission is delivered as usual but the user is not added to your mailing list.
Can I use this on multiple forms?
Yes. Each Contact Form 7 form has its own settings. You can connect different forms to different Mailchimp audiences or tag schemes, or leave some forms unconnected.
Does it support multiple audiences?
ChimpFuse supports selecting a different audience for each form. Your Mailchimp API key must have permission to access the audiences you choose. You can also set a default audience in the plugin settings.
What versions of WordPress and PHP are required?
You need WordPress 6.0 or newer and PHP 7.4 or later. Contact Form 7 version 5.4 or newer is recommended. If you are running older versions, please update before using ChimpFuse.
Will it slow down my site?
No. ChimpFuse sends a lightweight API request only when a form is submitted. If Mailchimp responds slowly, the request is logged and the form continues to deliver its message without delay. There is no performance penalty on page load.
How can I request a feature or report a bug?
We welcome feedback. Please visit madferretsoftware.co.uk/support to submit a feature request or bug report. Provide as much detail as possible so we can reproduce the issue and improve the plugin.
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