When data is received from webhook, loop through the JSON array in response using Iterator, check if email field has a valid email using Email List Validation and add a new member to Mailchimp List
A webhook array is looped through with Iterator, each email is verified by Email List Validation, and valid ones are added to your Mailchimp list, keeping bulk imports clean and deliverable.
Email List Validation
MailchimpFree · import into FlowMattic in one click
Every step, explained
Import the template and this whole chain runs on autopilot — here's exactly what happens on each run.


Built to own, not to rent
No-code setup
Import the JSON, connect your accounts, and go live in minutes. Every step is pre-mapped — you only add your own credentials.
Runs on your server
Self-hosted on your WordPress install. No per-task fees, no data leaving your infrastructure, no monthly SaaS bill.
Fully customizable
Open it in the visual builder and reshape it — add branches, swap apps, insert filters. A starting point, not a cage.
Ready to automate your WordPress site?
Download this workflow free, or grab FlowMattic and own every automation on your site — no per-task fees, ever.



