Dripline is a complete, front-end-only drip-campaign editor. Lay out a vertical timeline of emails, waits, conditions and goals, edit each email with a rich-text body, merge fields and fallbacks, and see it live in desktop, phone and plain-text previews with a sample-contact switcher.

A/B variants, a send-time window, and an enrollment simulator with its own seeded random generator turn the editor into a planning tool: enroll thousands of fictional contacts, set open, click and unsubscribe rates per step, and read the funnel, per-step stats, simulated A/B winner and day-by-day timeline. The simulator is a model, not real deliverability data, and the template does not send email.

Everything is plain HTML, CSS and JavaScript with no build step. State lives in localStorage, sequences export and import as JSON, and the one place to connect a real backend is documented. Three sample sequences (welcome, onboarding, win-back), dark and light themes, and keyboard and screen-reader support are included.