Self-hosted Mailchimp alternative: Listmonk and n8n for 8,400 contacts
A consultant replaced a home-services client's Mailchimp plan with Listmonk (lists, templates, sending via Amazon SES) and n8n on one small server. Three n8n workflows do the rest. One files new form leads into the right list without duplicates. One checks drafts (unsubscribe link, subject length, audience) before the weekly send, and one moves subscribers between nurture tracks based on engagement.
Setup steps
- Run n8n, Listmonk and PostgreSQL with Docker Compose on a small server
- Set up Amazon SES with domain verification and DKIM
- Intake: form webhook to n8n, route by service type, check for duplicates, add to a Listmonk list
- Weekly: send drafts only if the unsubscribe link, subject length and audience checks pass; otherwise alert Slack
- Daily: move unengaged subscribers to re-engagement, suppress bounces, log stats to Sheets
Steps summarized from the original Blog source ↗. Use “Copy” to grab them with the tools and source link, or copy an AI prompt.
How it went
Six months in: 187,000 emails across 43 campaigns, no missed campaign window, manual work down from 6 hours to 45 minutes a week, and a bounce rate down from 8.3% to 0.7%.
Worth knowing
Three fixes in the first 90 days: Listmonk's default database connection pool was too small, duplicate webhooks created duplicate subscribers, and an uncleaned list put the SES account at risk of suspension. A pre-send check was added after a near miss with broken merge tags.
Only what the original source ↗ says, re-read Oct 25, 2026. How we write these
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Paste this into ChatGPT, Claude or your own agent for step-by-step help. Prompt written by AppToBot from this recipe's data, not by the original author. It keeps drafts for your review and asks before anything is sent or paid.
Help me set up this automation using Listmonk + n8n + Amazon SES + Google Sheets: "Self-hosted Mailchimp alternative: Listmonk and n8n for 8,400 contacts". Goal: replace Mailchimp. How it should work: - Trigger: A new lead, a weekly schedule or a daily check - Then: n8n tags and files subscribers in Listmonk - Then: Checks drafts before sending - Then: Moves people between nurture tracks - Result: Campaigns sent through Amazon SES, stats in Sheets Setup steps (summarized from the original source): 1. Run n8n, Listmonk and PostgreSQL with Docker Compose on a small server 2. Set up Amazon SES with domain verification and DKIM 3. Intake: form webhook to n8n, route by service type, check for duplicates, add to a Listmonk list 4. Weekly: send drafts only if the unsubscribe link, subject length and audience checks pass; otherwise alert Slack 5. Daily: move unengaged subscribers to re-engagement, suppress bounces, log stats to Sheets Guide me one step at a time. Ask me for anything you need (accounts, sheet or channel names) before you start. Safety rules: - Build and test with sample data first, and show me a sample result before anything goes live. - Keep anything that goes to other people (emails, posts, replies, record updates) as drafts for my review until I say otherwise. - Never send, post, buy, pay, delete or change records without my approval. - Tell me about any cost (paid plans, API usage) before I'd incur it, and help me set a spending limit. - Keep API keys and passwords out of shared docs and chats. - Privacy: Subscriber data stays in your own Postgres; email goes out through Amazon SES. No AI step. Based on: https://whtnxt.io/blog/automated-email-marketing-n8n-listmonk-dfw
Tool names link to each official site (opens in a new tab).
Running cost: 💲 Paid plan needed A $12/mo server plus Amazon SES at $0.10 per 1,000 emails, per source. Self-hosted How we sort costs
Stack: n8n · Google Sheets · Slack
Replace an app: AI bots that replace Mailchimp
App vs bot, side by side
| Old app / habit | Bot | |
|---|---|---|
| Tool | Mailchimp | Listmonk + three n8n workflows + Amazon SES on a small droplet |
| Monthly cost | $417/mo, about to rise to $699 (per source) | About $16.50/mo itemized ($12 server + $4.50 SES), also stated as $18.50 (per source) |
| Setup | None (already in use) | Not reported · Advanced |
| Your time | Baseline | Not reported |
| Maintenance | Handled by vendor/you as before | Tune Listmonk's database connections, process bounces daily, and watch SES bounce limits. |
| Privacy | Data stays with the app vendor | Subscriber data stays in your own Postgres; email goes out through Amazon SES. No AI step. |
Full comparison
| Replaces | Mailchimp |
|---|---|
| Bot / agent stack | Listmonk + three n8n workflows + Amazon SES on a small droplet |
| Monthly cost before | $417/mo, about to rise to $699 (per source) |
| Monthly cost after | About $16.50/mo itemized ($12 server + $4.50 SES), also stated as $18.50 (per source) |
| Setup time | Not reported |
| Time saved | Not reported |
| Skill level | Advanced |
| Reliability | 3/5: six months of production figures and documented fixes, but it is an agency's own case study and its cost figures are not fully consistent. |
| Maintenance | Tune Listmonk's database connections, process bounces daily, and watch SES bounce limits. |
| Privacy & data | Subscriber data stays in your own Postgres; email goes out through Amazon SES. No AI step. |
| Best for | Service businesses with 5,000–50,000 subscribers (per source) |
| Not for | Teams who want a drag-and-drop editor and support |
Pros and cons
Pros
- Large monthly saving reported
- A safety check before every send
- Engagement-based list cleanup
Cons
- Needs someone who can run Docker, SES and n8n
- Listmonk has no built-in workflow engine; n8n handles that logic
Source and evidence
Agency case study (Jun 2026), six months in production: 187,000 emails across 43 campaigns, no missed campaign window, and manual work down from 6 hours to 45 minutes a week. The writer sells this setup, and a few of the cost figures don't match each other.
Read the original Blog source ↗
“Not reported” means the source doesn't say. We never fill gaps with guesses. Numbers marked “per author” or “vendor claim” are the source's own and weren't independently tested. Source last checked Oct 25, 2026.
Our rating is an editorial opinion based on the public source above, not lab testing. Spot an error? Request a correction.
Plain-text summary (for search and AI assistants)
Self-hosted Mailchimp alternative: Listmonk and n8n for 8,400 contacts. Replaces Mailchimp with Listmonk + three n8n workflows + Amazon SES on a small droplet. Cost before: $417/mo, about to rise to $699 (per source). Cost after: About $16.50/mo itemized ($12 server + $4.50 SES), also stated as $18.50 (per source). Setup: Not reported, Advanced. Time saved: Not reported. Reliability 3/5: 3/5: six months of production figures and documented fixes, but it is an agency's own case study and its cost figures are not fully consistent. Best for: Service businesses with 5,000–50,000 subscribers (per source). Not for: Teams who want a drag-and-drop editor and support. How it went (per source): Six months in: 187,000 emails across 43 campaigns, no missed campaign window, manual work down from 6 hours to 45 minutes a week, and a bounce rate down from 8.3% to 0.7%. Worth knowing: Three fixes in the first 90 days: Listmonk's default database connection pool was too small, duplicate webhooks created duplicate subscribers, and an uncleaned list put the SES account at risk of suspension. A pre-send check was added after a near miss with broken merge tags. Source: https://whtnxt.io/blog/automated-email-marketing-n8n-listmonk-dfw
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What is beehiiv?
beehiiv is a newsletter platform: you write and send emails, host a newsletter website, and grow and monetize a list from one place. We've used it for our own newsletter.
beehiiv says (vendor claims, not tested by us):
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Good for: starting or growing an email newsletter. Not ideal for: email automations or removing beehiiv branding on a $0 budget (those need Lite or Pro).
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