Newsletters · checked 2026-10-13

Can I vibecode ActiveCampaign?

KINDA· weekend project

The engine of ActiveCampaign fits in a weekend: contacts with tags and custom fields, a signup form with double opt-in, broadcasts, and automations that wait, branch on a tag or a click and send the next email through Amazon SES. What stays behind is everything around that engine. You take over deliverability (domain authentication, bounces, complaints, reputation), you lose the integrations that feed automations with purchases and bookings, and nobody but you can edit the flows. For a solo founder with a few thousand contacts the trade can be worth it; for a marketing team it rarely is.

$19/moprice

$228you'd save a year

weekendbuild time

—people replaced it

Before you start

What you need on hand.

DifficultyAdvanced · Real infrastructure or OAuth work.

TimeA weekend to build, plus a day or two waiting for SES production access

Claude Code, Codex or CursorAny of them can run the prompt; the automation worker usually needs a follow-up round.
An AWS account with Amazon SESNew accounts start in the SES sandbox and must request production access before mailing real people.
A domain whose DNS you controlFor SPF, DKIM and DMARC records; without them mail goes to spam.
A small public server with HTTPSForms, unsubscribe links and click tracking must be reachable from the internet.
A contacts export from ActiveCampaignInclude tags and custom fields, and the unsubscribed contacts so they stay suppressed.

Before you buildSmall list and simple flows? Brevo's free plan runs automations for up to 2,000 contacts; try it before building and running your own sender.

1. Install one agent: Claude Code, Codex, Cursor.
2. Make an empty folder and open it in the agent.
3. Paste the prompt below, press enter, and answer its questions as it builds.

The prompt

Build me a self-hosted email marketing and automation tool to replace
ActiveCampaign. Requirements:

- Node.js 22 + TypeScript: a Fastify server, a React admin built with Vite,
  better-sqlite3 in ./data/marketing.db. Admin UI on http://localhost:4800.
- Contacts with email, name, custom fields, tags and lists; CSV import with a
  column-mapping preview and merge by email.
- An embeddable signup form (one <script> snippet) with double opt-in.
- Segments from conditions (has tag, field equals, opened or clicked in the
  last N days) with a live count before saving.
- Broadcasts from Markdown or HTML templates with {{first_name}} fields, sent
  now or scheduled, throttled to the SES sending rate.
- Automations as ordered steps: trigger (tag added, form submitted, date
  field), wait N days, if/else on tag or click, send email, add or remove tag.
  A worker runs due steps every minute and survives restarts.
- Send with @aws-sdk/client-sesv2 (keys in .env). Suppress addresses on bounce
  and complaint notifications from an SNS webhook.
- One-click unsubscribe link plus List-Unsubscribe headers on every email;
  log opens and clicks per contact.
- Only form, unsubscribe, tracking and SNS routes are public; the admin is
  password-protected and meant for localhost or Tailscale. No telemetry.
- Out of scope: a drag-and-drop email designer, CRM deals, SMS, shop plugins.
- README: SES domain setup (SPF, DKIM, DMARC), requesting SES production
  access (budget a day for AWS to answer), and a plain warning that you now
  own deliverability.

Opens your agent with the prompt filled in, you press enter. Or copy it and paste it into an empty folder.

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Then keep going

Next prompts, same folder.

The first prompt builds the core. Run these one at a time in the same folder to grow it into your own ActiveCampaign.

Add an ActiveCampaign importer to the email tool in this folder. Requirements:

- Read ACTIVECAMPAIGN_URL and ACTIVECAMPAIGN_API_KEY from .env.
- Page through the v3 API (/api/3/contacts, /api/3/tags, /api/3/contactTags,
  /api/3/fields, /api/3/fieldValues, /api/3/lists), staying under 5 requests
  per second.
- Create matching tags, custom fields and lists, then contacts with their values.
- Contacts that are unsubscribed or bounced in ActiveCampaign are imported as
  suppressed and never mailed.
- A --dry-run flag prints the counts without writing; running twice must not
  create duplicates.
- Update the README with where to find the API URL and key.

Add a visual editor for automations to the email tool in this folder. Requirements:

- Use @xyflow/react to draw each automation as nodes: trigger, wait, if/else
  with two branches, send email, add tag, remove tag.
- Save to the same step format the worker already runs; old automations open
  in the canvas unchanged.
- Show how many contacts are waiting at each node right now.
- Validate before saving: one trigger, no dangling branches, no loops without
  a wait.
- Update the README.

Add Stripe purchase triggers to the email tool in this folder. Requirements:

- A webhook endpoint POST /hooks/stripe that verifies the signature with
  STRIPE_WEBHOOK_SECRET from .env.
- On checkout.session.completed, create or update the contact by email, add the
  tag customer and a tag with the product name, and fire a "purchase" trigger.
- On customer.subscription.deleted, add the tag churned.
- Log every event with its outcome; replaying an event must be safe.
- Update the README with the Stripe dashboard steps.

Add subject-line A/B tests to broadcasts in the email tool in this folder. Requirements:

- Send version A and B to two random 10% samples of the segment.
- After a wait I choose (1-24 hours), pick the winner by click rate and send
  it to the remaining 80%.
- Judge by clicks, not opens, and say why in the UI: Apple Mail Privacy
  Protection inflates open counts.
- Show the result next to the broadcast.
- Update the README.

What you lose

A drag-and-drop automation builder and 950+ ready-made recipes
Sending infrastructure that someone else keeps out of spam folders
1,000+ integrations, including shop, payment and booking events
Site tracking, predictive sending and conditional content
The CRM, SMS and WhatsApp add-ons

Why people still pay

People stay for the depth of the automations: tags, triggers and branches let a small business build follow-up flows without a developer, and integrations keep those flows fed with purchases, bookings and form fills. Deliverability is the quieter reason. An address that lands in the inbox is worth more than any feature, and few owners want to manage bounces and sender reputation themselves.

Moatintegrations infrastructure scale switching costs

Do the math

ActiveCampaign or your own copy?

Over

Your usage

Count my time12h ×$/h

ActiveCampaign, 1 yr$228

Your own copy, 1 yr$100running + build session

You keep$128pays for itself in the first month

Estimate · A small VPS runs about $5 a month. SES charges about $0.10 per 1,000 emails, so 10,000 emails a month cost roughly a dollar, and new AWS accounts get free-tier credits. The build is token usage on your agent plan.

Leaving ActiveCampaign

Take your data, then cancel.

1 · Take your data out of ActiveCampaign

1Open Contacts in the left menu, click the ••• menu at the top right of the overview and choose Export.
2Name the export without special characters (otherwise it arrives as a text file, not CSV) and tick the fields you want, tags included. The export runs in the background.
3Contact notes are not exported, and lists and campaign reports export separately. Automations don't come out as a file, so write down or screenshot every step.

2 · Cancel ActiveCampaign

1Only the Primary Admin can cancel. Click your profile, open Billing & Upgrade and choose Edit payment method.
2In that window, pick the cancel option at the lower left and step through the screens until you confirm. Some plans ask you to book a short call with the Success team first.
3Trials need nothing: they expire without a charge. Accounts bought through a reseller are cancelled with that reseller.

Monthly plans can pause billing instead of cancelling: up to 3 months, once a year, not on trials, resold accounts or Commit Annually, Pay Monthly.
On Commit Annually, Pay Monthly, cancelling takes effect only at the end of the annual term.
Don't count on a refund for unused time; cancel close to your renewal date.
Export unsubscribed and bounced contacts too and load them as suppressed in the new tool, so nobody who opted out hears from you again.

Checked 2026-10-13 against ActiveCampaign's docs: 1, 2, 3, 4

The escape hatch

Don't feel like building it? These are already free.

MauticOpen sourceThe closest open-source match: contacts, segments, a visual campaign builder, forms, landing pages and lead scoring. Needs cron jobs and real upkeep.★ 11k · active Oct 2026 · self-host, real ops
WebVisit ↗listmonkOpen sourceOne Go binary and Postgres for lists, templates and very large campaigns; no drip sequences out of the box.★ 24k · active Oct 2026 · docker to self-host
WebVisit ↗DittofeedOpen sourceEvent- and segment-triggered journeys that send email, SMS and push through providers you bring.★ 3.0k · active Oct 2026 · docker to self-host
WebVisit ↗

All 6 free alternatives to ActiveCampaign ›

The numbers

ActiveCampaign pricing

Plan	Monthly	Annual, per month	What you get
Starter	$19	$15	1 user, sends up to 10x the contact limit, 5 actions per automation, limited segmentation, 15 active goals.
Plus	$59	$49	1 user, unlimited automation actions, standard segmentation, landing pages, 25 active goals.
Pro	$99	$79	3 users, sends up to 12x the contact limit, advanced segmentation, predictive sending, conditional content, attribution.
Enterprise	$179	$145	5 users, sends up to 15x the contact limit, premium segmentation, custom objects, SSO, a dedicated account team.

Free tier: No free plan; a 14-day trial with no card required.
Billing: Month to month, annual paid up front, or an annual commitment paid monthly. The price follows your contact band (the calculator runs from 1,000 to 50,000+ contacts); growing past it moves you to the next band.
Hidden costs: Every contact band raises the bill, on every plan. The CRM pipelines, sales engagement, SMS, WhatsApp, custom reporting and transactional email (Postmark) are paid add-ons, and extra users cost more on top.
Source: www.activecampaign.com

Also on the list

Mailchimp$13/mo · NewslettersKINDA

beehiiv$59/mo · NewslettersKINDA

Pipedrive$24/mo · CRMKINDA

Questions

ActiveCampaign, briefly

Not answered here? Tell us and we'll add it.

Ask a question ›

Kinda. The core is a weekend build with the prompt on this page, but real gaps remain: A drag-and-drop automation builder and 950+ ready-made recipes, Sending infrastructure that someone else keeps out of spam folders.

About $19 a month on the Starter (1,000 contacts) plan, $228 a year (checked 2026-10-13).

A drag-and-drop automation builder and 950+ ready-made recipes; Sending infrastructure that someone else keeps out of spam folders; 1,000+ integrations, including shop, payment and booking events; Site tracking, predictive sending and conditional content; The CRM, SMS and WhatsApp add-ons. If any of those matter to you, keep paying.