KingSMTP is crypto-only by design. We do not accept credit cards or PayPal — and that is intentional.
Why we do not accept credit cards
Credit cards require identity verification (KYC), leave a paper trail, and can be reversed or frozen. For a privacy-focused SMTP service, that does not make sense. With Bitcoin or USDT you stay anonymous, payments are instant, and there are no banking restrictions — even if your business operates in a high-risk niche.
Buy SMTP with cryptocurrency
- Bitcoin (BTC)
- Tether (USDT)
- Monero (XMR) — maximum privacy
- Other crypto on request — contact us
Plans starting from $49/year
| Monthly volume | Price per year |
|---|---|
| Up to 5,000 emails | $49 / year |
| Up to 10,000 emails | $79 / year |
| Up to 20,000 emails | $159 / year |
| Up to 50,000 emails | $489 / year |
| Up to 100,000 emails | $989 / year |
How it works
- Sign up for a free 7-day trial — no payment needed
- Test the service with your app or website
- When ready, contact us to upgrade and pay with crypto
- Account activated within minutes