Email marketing
CodeOutbox
Email marketing for developers. Paste a form, no backend, write in Markdown, run from your coding agent.
Email marketing platform where developers paste a form with no backend, write campaigns in Markdown in their repo, and send from their coding agent via MCP.
Overview
A look at codeoutbox.com
CodeOutbox is an email marketing platform designed for developers. It requires no backend setup—you simply paste a form tag into your site, and CodeOutbox handles subscriber storage, double opt-in, consent, and delivery. Write your campaigns as Markdown files in your repository, review them in pull requests, and send them through your coding agent via MCP without needing a dashboard.
The platform provides inboxing infrastructure including SPF, DKIM, DMARC, one-click unsubscribe, bounce and complaint suppression, and graduated sending. Your coding agent can create lists, check subscriber counts, preview campaigns, and set up domain authentication—all from your editor. Lists and campaigns live as files in your repository, enabling version control and CI/CD integration.
Feature notes
- Write campaigns in Markdown files
- Run broadcasts from coding agent over MCP
- Double opt-in on by default
- Automatic domain authentication with DNS setup
- Export subscriber data to CSV or JSON
- Lists and campaigns stored as repository files
- 30-day money-back guarantee on paid plans
- SPF, DKIM, DMARC authentication
- One-click unsubscribe and bounce suppression
Pricing
Pricing model: Freemium
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FAQ
- Do I really not need a backend?
- No, you don't need a backend. Your form posts straight to CodeOutbox, which handles subscriber storage, double opt-in, consent records, and email delivery. You only need to ship a form tag—nothing to host or maintain.
- Where does my subscriber data live and can I export it?
- Subscriber data lives in CodeOutbox, but you can export it anytime to CSV or JSON with no lock-in. The 'no backend' approach means no backend for you to maintain, not that your data is hidden.
- How does CodeOutbox compare to Mailchimp or Kit?
- At $9/mo, CodeOutbox offers 3,000 subscribers versus Mailchimp's ~$13 for 500 or Kit's ~$25 for 1,000. CodeOutbox also provides a developer workflow unique to the platform: paste a form with no backend, write campaigns in Markdown in your repo, and run sends from your coding agent.
- Is there a discount for annual billing?
- Yes, annual billing provides 2 months free, which is about 17% off. Pro is $90/year, Growth is $190/year, and Scale is $490/year.
- What is the refund policy?
- CodeOutbox offers a 30-day money-back guarantee on paid plans. If you are not satisfied within 30 days of a charge, contact them for a full refund.
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