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CodeOutbox vs Sequenzy

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

CodeOutbox compared with Sequenzy
DetailCodeOutbox logo CodeOutboxSequenzy logo Sequenzy
What it doesEmail marketing for developers. Paste a form, no backend, write in Markdown, run from your coding agent. AI-native email marketing platform for SaaS and ecommerce that writes and sends campaigns, automations, and transactional emails triggered by billing and product events
StageNot given Startup
FoundedNot given 2025
Based inNot given US
Pricing modelFreemium Freemium
PricingNot given Free: 2,500 emails/month. Pro plans start at $19/month for 15,000 emails, then scale by monthly email volume. SMS & MMS add-on: $16/month with 1,000 credits. Dedicated IPs: $30/month per IP. Done-for-you service: $499/month (founding price) with 3-month minimum. All plans include unlimited contacts,
Key features
  • 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
  • AI-generated email sequences from your website brand and voice
  • Campaign automation triggered by Stripe billing events and product events
  • Revenue attribution showing which emails earned each payment
  • Transactional API for receipts, password resets, and notifications
  • Smart segments that update automatically based on customer data and behavior
  • AI agents can draft and manage campaigns through MCP server, API, or CLI
  • Shopify and WooCommerce integration for ecommerce flows
  • SMS and MMS optional add-on with dedicated US/Canada number
What makes it different
  • Developer-first workflow with no dashboard required—set up forms, manage lists, and send campaigns entirely from your coding agent and repository
  • More subscribers at lower entry price than competitors: 3,000 subscribers at $9/mo vs Mailchimp ~$13 for 500 or Kit ~$25 for 1,000
  • Completely free tier with 100 subscribers and no credit card or trial clock
  • Version-controlled campaigns as Markdown files reviewed in pull requests
  • Open source platform with no backend infrastructure to maintain
  • Priced per email sent, never per contact
  • One account for marketing, transactional, and billing event emails
  • Native integration with 7 billing providers and ecommerce platforms
  • Revenue attribution reports which emails actually paid for themselves
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last check70 no change since last check
Trust Flow (Majestic)015
Citation Flow (Majestic)041
Referring domains (Majestic)0745

4 details filled in for both companies.

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