KingSMTP is a privacy-focused transactional email service built for developers and businesses that do not want to hand over their identity to send emails. No KYC, no data profiling, no US or EU jurisdiction — pay with Bitcoin or crypto.
What makes KingSMTP privacy-focused?
- No KYC — we do not ask for identity documents or personal verification
- No IP logging — sender IP is masked with
127.0.0.1, no IP leaks - No data profiling — your emails are never scanned or sold
- No cookies or persistent tracking — no cookie banners, no behavioral tracking
- Hosted outside EU & US — not subject to GDPR enforcement, Cloud Act, or US data requests
- Open-source infrastructure — powered by Postal, fully auditable
- Pay anonymously — Bitcoin, USDT, Monero accepted. No credit card required.
- Self-funded & independent — no investors, no corporate interests influencing the service
KingSMTP vs other SMTP providers
| Feature | KingSMTP | SendGrid | Mailgun | Postmark |
|---|---|---|---|---|
| KYC required | No | Yes | Yes | Yes |
| Crypto payment | Yes (BTC, USDT, XMR) | No | No | No |
| IP leak protection | Yes — masked 127.0.0.1 | No | No | No |
| Open-source | Yes (Postal) | No | No | No |
| Jurisdiction | Outside EU & US | US | US | US |
| Data profiling | Never | Yes | Yes | No |
| Starting price | $49/year | $20/month | $35/month | $15/month |
Hosted outside EU and US jurisdiction
KingSMTP servers are physically located in India. This means your data is not subject to EU GDPR enforcement actions, US Cloud Act data requests, or subpoenas from US courts. For businesses operating in regulated or sensitive industries, this provides an additional layer of protection.
Built on open-source software
KingSMTP is powered by Postal — an open-source mail server you can inspect, audit, and even self-host. Unlike proprietary SMTP services where you have to trust their word, open-source infrastructure means our claims can be verified.
Pay anonymously with Bitcoin
Privacy does not stop at the email level. We accept Bitcoin, USDT, and Monero — so your payment method does not expose your identity either. No credit card, no bank transfer, no paper trail.
Pricing
| Monthly volume | Price per year | Price per month |
|---|---|---|
| Up to 5,000 emails | $49 / year | Annual only |
| Up to 10,000 emails Popular | $79 / year | Annual only |
| Up to 20,000 emails | $159 / year | Annual only |
| Up to 50,000 emails | $489 / year | $49 / month |
| Up to 100,000 emails | $989 / year | $99 / month |
| 100,000+ emails | Custom pricing | Custom pricing |
FAQ
Does KingSMTP require identity verification?
No. We do not require KYC. You only need a domain to get started.
Where are the servers located?
India — outside EU and US jurisdiction.
Can I pay with Bitcoin?
Yes. We accept Bitcoin, USDT, Monero and other cryptocurrencies. No credit card accepted.
Do you log sender IPs?
No. Sender IP is masked with 127.0.0.1 in all outgoing emails to prevent IP leaks.
Is there a free trial?
Yes — 7 days, no credit card, no KYC required.