Looking for a Postmark alternative that accepts Bitcoin or crypto? KingSMTP is one of the few transactional SMTP services where you can pay with Bitcoin, USDT or Monero — no KYC, no credit card required.
Why switch from Postmark?
- Postmark does not accept cryptocurrency payments
- Requires identity verification and credit card
- US-based — subject to US data laws
- Pricing starts at $15/month — no annual discount option
- No email routing (MX) included
KingSMTP vs Postmark
| Feature | KingSMTP | Postmark |
|---|---|---|
| Free trial | 7 days, no credit card | 100 test emails |
| Crypto payment | Yes (BTC, USDT, XMR) | No |
| KYC required | No | Yes |
| Privacy-focused | Yes — outside EU/US | No — US-based |
| Starting price | $49/year | $15/month |
| SMTP & API access | Yes | Yes |
| Email routing (MX) | Yes | No |
| WordPress plugin | Yes | Third-party only |
| Open-source infrastructure | Yes (Postal) | No |
Why choose KingSMTP as a Postmark alternative with crypto payment
- Pay with Bitcoin, USDT or Monero — no bank, no KYC, no restrictions
- Privacy-first — hosted outside EU and US jurisdiction
- Cheaper — $49/year vs $15+/month for Postmark
- Free 7-day trial — no credit card needed
- Email routing included — receive and forward emails too
- 99% inbox rate — clean IPs, DKIM/SPF included
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
Can I pay for SMTP with Bitcoin instead of credit card?
Yes. KingSMTP accepts Bitcoin, USDT, Monero and other cryptocurrencies. No credit card required.
Is KingSMTP a good Postmark alternative?
Yes — especially if you want to pay with crypto, need email routing, or want a privacy-focused service outside US jurisdiction.
Is there a free trial?
Yes — 7 days, no credit card, no KYC.
Does KingSMTP require identity verification?
No. You only need a domain to get started.