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A developer wanted to send auto-replies from Mailchimp after a CF7 form submission. He wanted silent sign-ups. No checkboxes. Most answers provide a code snippet and stop. They ignore consent and logic.
Here is the correct flow:
- Visitor submits CF7 form.
- Contact enters Mailchimp audience.
- A tag is applied to the contact.
- The tag triggers a Mailchimp automation.
- A drip sequence sends emails.
Consent matters. Marketing emails need explicit consent. Transactional emails are different. These respond to a user action. If you send a direct response to a request, consent rules are lower. If you promote services, you need a checkbox. Add a clear notice in your privacy policy.
Three ways to build this:
MC4WP Plugin Enable Implicit sign-up in settings. Use a filter to assign tags based on form ID.
Custom PHP Use the PUT method for the API. This updates existing contacts instead of creating duplicates. Send a second request to apply tags.
Contact Form to API This removes the need for code. Map your fields in the WordPress dashboard.
Set up your trigger:
- Go to Customer Journeys.
- Set the starting point to Tag is added.
- Select your specific tag.
- Build your email sequence and delays.
One final tip. Use your Audience ID, not the name. Find it in Audience Settings.