PayMeNow (AI Invoice Reminder MVP)
- What is the core user problem the MVP solves?
Freelancers don’t get paid on time because clients forget or ignore invoices, and manually chasing them wastes time.
- Who is the primary user?
A solo freelancer who sends 2–15 monthly invoices and wants automatic follow-ups.
- What is the single “hero action”?
Send an automated invoice reminder to a client with a pay-now link.
- Supporting actions (2–4 only):
Add a client + invoice link
Choose reminder template
Schedule or send now
View reminder status
- Required platform:
Web app only.
- Authentication required?
Yes — minimal email + password only.
- Payments required?
Yes — simple Stripe Checkout link embedded in reminder. developer is my from lemonsqueecy or dodopayment
- Real-time features required?
No. Scheduled cron jobs are enough.
- Data to store (nouns only):
Users, Clients, Invoices, Reminder Templates, Reminder Logs, Payment Links, Settings.
- Out of scope for MVP:
Full accounting, invoice generation, SMS/WhatsApp reminders, multi-team accounts, analytics dashboard, AI tone customization v2, mobile apps.
PayMeNow — Ultra-short MVP Spec
Goal: Let a freelancer send one automated invoice reminder with a Stripe pay link in ≤60 seconds.
Primary user: Solo freelancer.
Hero action: Create reminder → send now / schedule send.
Core features (MVP):
User signup/login (email + password).
Create client record + paste invoice URL and amount.
Select one of 3 reminder templates (friendly/firm/final).
Create reminder (send now or schedule) that embeds Stripe Checkout/pay-link.
Reminder status page (Pending / Sent / Paid).
Non-functional: Simple responsive web UI, email delivery reliability (~99%), basic logging.
Success metric (MVP): Number of reminders sent and paid via pay-link in first 30 days.
PayMeNow — System Architecture (MVP)
High-level components
Frontend: Svelte (SPA) hosted on Vercel (static + client routes).
Backend API: Serverless Node (Vercel Serverless Functions / small Express on Render).
Database: Supabase (Postgres) for user/auth/data.
Auth: Supabase Auth (email + password).
Payments: Stripe Checkout + Payment Links.
Email delivery: SendGrid (transactional templates).
Scheduler: Simple cron job (Vercel cron or Supabase scheduled function) to trigger scheduled reminders.
Job queue (optional): Lightweight queue (BullMQ / Redis) if scale required later.
Monitoring: Sentry for errors + LogTail for logs.
Data flow (sequence)
User logs in → frontend calls API to create client+invoice entry.
User creates reminder → API stores reminder record with scheduled_at.
If send-now: API generates Stripe payment link, builds email body, calls SendGrid to send email, updates reminder_log.
If scheduled: Cron runs, finds due reminders, repeats step 3.
Webhook: Stripe sends payment webhook → API marks invoice as paid and notifies user (email + dashboard).
Minimal API endpoints
POST /api/signup — create user
POST /api/login — login
POST /api/clients — add client
POST /api/invoices — add invoice (url, amount)
POST /api/reminders — create reminder (template, send_now/scheduled_at)
GET /api/reminders/:id — status
POST /api/webhooks/stripe — payment status update
POST /api/webhooks/sendgrid — optional bounce/complaint handling
Data model (nouns only)
users {id, email, password_hash, plan}
clients {id, user_id, name, email, meta}
invoices {id, client_id, user_id, invoice_url, amount, currency, external_id}
reminders {id, invoice_id, user_id, template_id, scheduled_at, status}
reminder_logs {id, reminder_id, sent_at, channel, result}
payment_links {id, invoice_id, stripe_link, status}
Deployment & infra choices (MVP)
Vercel for frontend + serverless functions — free / low cost starter.
Supabase free tier for DB/Auth.
Stripe (no monthly) + SendGrid free tier.
Twilio omitted for MVP (out of scope). Estimated monthly dev infra cost (MVP): <$100.
Security & compliance
TLS everywhere (Vercel + Supabase).
Store no card data (Stripe handles payments).
Webhook signature verification (Stripe/SendGrid).
Basic rate limiting on API.
Scale considerations (after MVP)
Move scheduled jobs to dedicated worker + Redis queue.
Add SMS/WhatsApp channels (Twilio/WhatsApp Business).
Add multi-client/team accounts and analytics.
is this structure ok, or we have to refine it , make everything in your power to make this an success and earn money. now our aim is 10k mrr and go on with this.stripe is not available in india. design our marketing page that converts and gets users.