Mailchimp

Add each submitter to a Mailchimp audience using the Marketing API. Optional tags help segmentation; you can require double opt-in when you need a confirmation email.

What you need

• Mailchimp account with API key (includes data-center suffix, e.g. ...-us21).
• Audience (list) ID from audience settings.

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What you configure

• API key and Audience ID.
• Email field – defaults to email.
• Tags – optional comma-separated values applied after a successful subscribe.
• Double opt-in – choose pending confirmation vs immediate subscribed status.

Scalar fields from the submission map to merge fields (keys are uppercased by convention).

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Steps

1. In Mailchimp, gather API key and audience id.
2. In Formspring, open your form → Integrations → Mailchimp → fill fields → Save.
3. Submit a test; confirm the member and Deliveries.

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Tips

• Merge fields must exist in Mailchimp before sending uncommon keys.
• Watch compliance: use double opt-in when policy requires it.

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More help

• Mailchimp Marketing API