Add List Member: Mailchimp action

Inputs

The fields this action accepts.

Every field can be mapped from an upstream trigger, AI step, table row, or hard-coded literal.

Field	Type	Required	Description
Audience/List ID list_id	string	Required	Mailchimp audience (list) ID — a 10-char hex string. Find in Audience > Settings > Audience name & defaults.
Email Address email_address	string	Required	Email Address. e.g. "user@example.com"
Status status	options	Required	Status. Options: Subscribed, Unsubscribed, Cleaned, Pending
First Name first_name	string	Optional	Contact's first (given) name.
Last Name last_name	string	Optional	Contact's last (family) name.

Sample request

{
  "list_id": "e.g. abc123def4",
  "email_address": "user@example.com",
  "status": "{{trigger.status}}",
  "first_name": "e.g. Jane",
  "last_name": "e.g. Doe"
}

Returns

{
  "id": "abc123",
  "status": "subscribed",
  "list_id": "abc123def4",
  "merge_fields": {
    "FNAME": "John",
    "LNAME": "Doe"
  },
  "email_address": "user@example.com"
}

Use these fields in downstream nodes for routing, logging, or error handling.

FAQ

Questions about Add List Member.

What does the Add List Member action do in Mailchimp?

Adds a subscriber to a Mailchimp audience/list with email, status (subscribed/pending), merge fields, and tags. Use to push form fills or new customers into your email program.

What inputs does Add List Member require?

Required: Audience/List ID, Email Address, Status. Every input accepts a static value or a variable from any upstream node in your workflow.

Can I use dynamic inputs from earlier workflow nodes?

Yes. Any field on this action can pull values from upstream nodes, whether that's a form response, a trigger payload, an AI output, or a lookup result.

What happens if Mailchimp returns an error?

The workflow pauses on the failed node, the error message is captured in the run log, and you can retry the run with one click. Auto-retry policies are configurable per workflow with exponential backoff up to 5 attempts.

Does Add List Member support batch operations?

Yes. Run Add List Member inside a Loop node to process arrays. Tiny Command handles Mailchimp's rate limits automatically so you don't have to throttle manually.

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