# How to Vibe Code Your Own EmailOctopus (and Stop Paying for It) > Email marketing and automation platform - Site: https://emailoctopus.com - Category: SaaS - Platforms: Web app - Verdict: **Serious undertaking** (45/100 vibecodeable) - Estimated effort: 3-4 weeks of focused development ## Verdict Build a single-user campaign dispatch wrapper with Amazon SES, but watch out for async worker queues and tracking ingestion. Vibecoding a personal email marketing clone is entirely feasible for the core CRUD and UI loops, but email delivery infrastructure introduces severe non-code friction. Setting up reliable bounce/complaint handling via AWS SNS webhooks, designing worker queues that will not flood upstream SES limits, and capturing open/click telemetry reliably require precise asynchronous event design that AI agents will need multiple iterations to debug. ### What you can't replicate - Established sender reputation across major ISPs - Decade-long ecosystem of native integrations ## What it does An online email marketing and automation platform that enables users to design, schedule, and send targeted campaigns, build multi-step automated sequences, capture leads, and route delivery through Amazon SES. ### Core features - Subscriber list management and custom fields - Drag-and-drop or HTML email campaign builder - Multi-step marketing automation sequences - Lead capture forms and landing pages - Real-time tracking analytics (opens, clicks, bounces) - Amazon SES relay integration (EmailOctopus Connect) ## The business ### Pricing - Starter: Free - Pro: $9/mo Founded 2014. Team size: 10-50. ## The hard parts - Email deliverability, DMARC/DKIM/SPF alignment, and spam trap avoidance - Asynchronous queue management for high-throughput campaign blasts - Reliable tracking pixel and redirect link ingestion pipelines - GDPR data retention and right-to-be-forgotten deletion workflows ## How to vibe code EmailOctopus ### Prerequisites - Node.js (free): Runtime environment for Next.js development - Amazon AWS Account (pay-as-you-go ($0.10 per 1k emails)): Required for Amazon SES email sending and SNS bounce/complaint webhooks - GitHub (free): Version control and repository hosting ### Recommended AI tools - Claude Code: Best-in-class multi-file reasoning agent for scaffolding complex full-stack Next.js applications and worker pipelines - Cursor: AI code editor for iterative UI polish on campaign builders and dashboard views ### Stack - Frontend: Next.js with Tailwind CSS and shadcn/ui - Backend: Next.js App Router API Routes - Database: Turso (SQLite at the edge for relational subscriber and campaign data) - Auth: better-auth - Payments: None (personal use clone) - Other: Amazon SES for email delivery, Inngest for durable background job processing and campaign dispatch queues, PostHog for product analytics ### Hosting - Vercel (Hosting the Next.js frontend and serverless API endpoints): $0/mo (Hobby Tier) - Turso (Hosting the SQLite database for subscribers, campaigns, and tracking logs): $0/mo (Free Tier) ### Build guide 1. **Project Scaffolding and Database Schema** — Initialize the Next.js application with TypeScript, Tailwind CSS, and shadcn/ui components. Set up Turso database connection and define Prisma/Drizzle schemas for users, lists, subscribers, custom fields, campaigns, and tracking events. ``` Initialize a new Next.js project with TypeScript, Tailwind CSS, and better-auth integration. Configure Drizzle ORM to connect to a Turso SQLite database. Create database migrations and tables for users, mailing lists, subscribers (with custom JSON fields), campaigns (title, subject, html_content, status), and event logs (opens, clicks, bounces). Set up the dashboard layout with sidebar navigation for Campaigns, Lists, Automation, and Reports. ``` 2. **Subscriber Management & Custom Fields** — Build the subscriber list manager allowing CSV imports, single subscriber creation, and dynamic custom field definitions. ``` Build subscriber list management pages in Next.js App Router. Implement a table view with pagination, search, and filtering by list and custom fields. Create a CSV import form that parses uploaded files via PapaParse, maps columns to subscriber fields, and bulk-inserts records into Turso using batch transactions. Add an export CSV feature. ``` 3. **Campaign Editor and Preview** — Create an email campaign creation interface supporting rich HTML editing and template variables. ``` Develop the campaign creation workflow. Build a form for subject line, sender name, and preview text. Integrate a rich text / HTML editor alongside a live preview pane that replaces merge tags like {{subscriber.first_name}} with mock data. Save drafts and completed campaigns to the database. ``` 4. **Amazon SES Integration & Dispatch Engine** — Integrate AWS SES SDK to send bulk email campaigns using background workers for throttling. ``` Implement the email dispatch engine using the AWS SDK for JavaScript (SES v3). Configure Inngest to handle background job execution for campaigns. When a campaign is scheduled or sent, fetch subscribers in chunks, compile personalized HTML for each subscriber with tracking pixels and rewritten link URLs, and send via SES respecting rate limits. Update campaign status to 'sent' upon completion. ``` 5. **Tracking Pixels & Link Click Telemetry** — Build tracking endpoints to capture email opens via invisible 1x1 pixels and clicks via redirect URLs. ``` Create API route handlers for email tracking. Implement GET /api/track/open?c={campaignId}&s={subscriberId} that logs an open event and returns a 1x1 transparent GIF. Implement GET /api/track/click?c={campaignId}&s={subscriberId}&url={destinationUrl} that logs a click event, increments click counters, and issues an HTTP 302 redirect to the destination URL. Store all telemetry in the event logs table. ``` 6. **Automation & Welcome Drips** — Implement a simple automation sequence trigger when a new subscriber joins a list. ``` Build a basic marketing automation workflow engine using Inngest. When a subscriber is added to a list with an active welcome automation, trigger a durable background workflow that waits for a configured delay (e.g., 1 hour) and then dispatches a welcome email campaign using the SES integration. Log all workflow execution steps. ``` 7. **Reporting & Analytics Dashboard** — Aggregate open, click, bounce, and unsubscribe metrics into a visual reporting dashboard for each campaign. ``` Build a campaign analytics report view displaying total sent, open rate percentage, click rate percentage, bounce count, and unsubscribe count over time. Use Recharts to render time-series charts of opens and clicks. Display a paginated event log table for individual subscriber activity. ``` ### Cost vs paying **Starting costs (one-time):** - Custom Domain (optional): $12/yr - Total: ~$12 one-time **Ongoing costs (monthly):** - AWS SES usage (10k emails): $1.00/mo - Vercel & Turso: $0/mo - Total: ~$1/mo - Paying for the SaaS instead: $9/mo (Pro Plan) - Build time: 25-35 hours - AI tool credits: $20 (Claude Pro) - Break-even: Never (built for learning and personal utility) ## Sources - [EmailOctopus Official Website](https://emailoctopus.com) - [EmailOctopus Pricing Portal](https://emailoctopus.com/pricing)