Transactional email for developers — not marketers
MailsSetu is purpose-built for transactional messages: order confirmations, password resets, OTP codes, and account alerts. A clean API, INR billing, and SMS + OTP included — no marketing platform required.
What you get with MailsSetu
Built for developers who want to ship communications fast and correctly.
Built purely for transactional email
No campaign builder, no audience segments, no subscriber lists. MailsSetu is designed for server-to-person triggered messages — exactly what developers need.
Standalone INR pricing
One flat subscription in Indian rupees covers your entire email, SMS, and OTP volume. UPI and net banking accepted. No parent platform required.
Clean, modern REST API
POST /v1/emails with TypeScript types, idempotency keys, batch sends, scheduled delivery, and template variable substitution. Everything you expect from a modern developer API.
SMS and OTP in the same account
Trigger SMS notifications and OTP verification from the same API key as your email sends. One account, one log, one invoice.
Sandbox ready from signup
Test the complete integration — email, SMS, OTP, webhooks — with a sandbox key before you set up DNS or go live. No production credentials needed.
GST invoices included
Every billing cycle generates a GST-compliant invoice automatically. No manual requests or custom billing arrangements.
Simple INR pricing
Flat-rate monthly plans. No per-email surprise charges above quota.
SMS credits and top-up email credits available separately. GST applied on all invoices. UPI · Debit/credit cards · Net banking accepted.
India-first. Not India-as-an-afterthought.
Indian startups need transactional email that fits Indian financial infrastructure. MailsSetu is the only platform purpose-built for this — INR pricing, UPI billing, GST invoices, and India-based support.
GSTIN 29AANCR6717K1ZN · Mumbai, Maharashtra · Managed delivery stack
Start sending transactional email today
Free tier: 3,000 emails/month. Sandbox mode works immediately, and paid plans start from ₹399/month when you are ready to go live.
Explore more
See the intent page built for API-first sending, SMTP relay, and developer workflows.
Move from pricing research to a real send flow with a sandbox key and verified domain plan.
Learn how SPF, DKIM, DMARC, bounce handling, and reputation affect real inbox placement.