Kompozy + Mailchimp integration
Mailchimp handles the newsletter delivery layer. Kompozy publishes generated drafts directly.
Last verified · 2026-10-23 · by Moe Ameen
Published 2026-04-24 · Updated
Short answer
Kompozy's Mailchimp integration turns a generated newsletter into a Mailchimp campaign and sends it from your Mailchimp account. The draft arrives with its subject line, preview text, and body already filled in, and you pick the audience list each time you publish. You connect Mailchimp with your own API key. Kompozy can't publish to Substack, so Mailchimp is the email route it supports.
Key takeaways
- Kompozy builds the Mailchimp campaign for you, with subject line, preview text, and body filled in.
- You choose which Mailchimp audience list gets each send.
- It runs on your own Mailchimp account, connected with your API key.
- Substack isn't a publishing option. Mailchimp is the newsletter destination Kompozy supports.
What does the Kompozy Mailchimp integration do?
- Direct publish from Kompozy
- Subject + preview + body all populated
- Audience list selection per publish
What does this look like in Kompozy?
A real photo post generated in the Kompozy workspace. It shows one of the image formats Kompozy can make alongside a newsletter draft.
Who is this for, and who should skip it?
Best for:
- Teams that already send their newsletter on Mailchimp and are tired of pasting drafts in by hand
- Creators who want the newsletter written from the same source as their social posts
Not ideal for:
- Substack writers. Kompozy can't publish to Substack
- Anyone without a Mailchimp account. Mailchimp does the delivery, so you need your own
Frequently asked questions
What does Kompozy send to Mailchimp?
A full campaign built from your newsletter draft. The subject line, preview text, and body are filled in, and Kompozy sends it through your Mailchimp account.
Can I choose which Mailchimp audience gets the newsletter?
Yes. You pick the audience list every time you publish, without leaving Kompozy.
What do I need to connect Mailchimp?
A Mailchimp account and its API key, which you add in your Kompozy settings.
Does Kompozy support Substack?
Not for publishing. You can add a Substack feed as a source through RSS, but newsletters go out through Mailchimp.
How do we know this?
On 2026-10-23 we checked each claim on this page against the Kompozy integrations page and the code of Kompozy's Mailchimp publish route, which creates, fills, and sends the campaign.
Sources
- Kompozy — Integrations (Blotato, Mailchimp, Stripe, Supabase) (read 2026-10-23)
- AI Content Repurposing — The complete methodology for turning one source into 25-35 pieces of native-format content across every platform — without producing AI slop.
- Autonomous Content Creation — Most "autonomous" AI content is slop.
- AI Brand Voice & Persona — Without a Persona Brief, every AI output averages to the LLM default voice.