NewslettersCAN I VIBECODE
MailerLite?
BUILD FIRST
- One specific customer type and one primary use case
- A vertical slice that completes the main job without manual workarounds
- Visible limits, review steps, and a fallback when an external dependency fails
LEAVE FOR LATER
- Broad third-party integrations
- High-scale collaboration, syncing, and permissions
- Automation that can cause harm without human review
RESEARCH NOTES
What this tool actually does.
MailerLite is a SaaS email marketing and newsletter platform. Core workflow: grow subscriber lists via signup forms, pop-ups, landing pages, or built-in website builder; design responsive email campaigns with a drag-and-drop editor (70+ content blocks: surveys, image carousels, countdown timers) or from customizable templates; send broadcasts or trigger automation workflows (e.g., birthday discounts, lead magnets, full sales funnels); segment by custom fields/tags; personalize with dynamic content blocks and machine-learning Smart Sending timing; A/B test subject lines, sender name, and send time. Reports track opens, clicks, geolocation, signup sources, and ecommerce revenue. Also supports paid newsletter subscriptions, digital product sales, AI email generator, transactional email, quiz maker, email verifier, preference center, and 150+ integrations. Pricing is tiered by subscriber cou
RESEARCHED BUILD PROMPT
Give this to your coding agent.
Build 'MailerFlare', a self-hosted newsletter/email marketing web app replicating MailerLite's core workflow: manage subscriber lists; create signup forms and landing pages; design responsive email campaigns via a drag-and-drop builder with reusable content blocks (text, image, button, divider, countdown timer, image carousel, survey); schedule broadcasts and build visual automation flows (triggers: signup, date field, tag change; actions: send email, add/remove tag, wait duration, move to segment); segment by custom fields and tags; A/B test subject lines and sender names; show per-campaign metrics (opens, clicks, unsubscribes, geolocation) plus a per-subscriber activity timeline. Technical: Node.js/TypeScript backend, PostgreSQL, React frontend with a block-canvas editor using dnd-kit, BullMQ + Redis for scheduled sends and automation queues, MJML for email rendering, Nodemailer/Resend for delivery with an SMTP test mode that logs to a local mailbox. Provide CSV subscriber import, unsubscribe link handling, a preference center, and a basic REST API (list, subscriber CRUD, campaign create/send). Do not copy MailerLite's brand, logo, marketing copy, or UI layout. Out of scope: transactional email service, paid-subscription billing, quiz builder, website builder, multi-tenant billing, team roles. Include a README with setup steps (env vars, migrations, seed data), architecture overview, and known limitations (no IP warmup, no advanced deliverability tooling, single-node queue, SMTP-only sending).