A handful of SMTP relays accept crypto, and Maileroo is the clearest: it says it takes over 40 coins, including Bitcoin, Ethereum and major stablecoins, for the same plans card buyers get. The big names generally do not: Amazon SES's billing docs list cards and bank debit only. If you run your own sending server, the easiest part to pay in crypto is the monthly hosting, because hosts like Vultr accept coins through BitPay. That is also the bill that repeats every month.
Who accepts crypto, and what they take
| Provider | Crypto accepted? | Coins named | Notes |
|---|---|---|---|
| Maileroo | yes | 40+ coins, incl. BTC, ETH, stablecoins | same plans, quotas and support as card |
| Amazon SES | no | none | billing docs list cards and ACH or SEPA debit |
| SendGrid, Mailgun, Postmark | not advertised | none | check the billing page before assuming |
| Small "SMTP for crypto" sellers | advertised | varies | many also sell lists, see red flags below |
| VPS hosts, e.g. Vultr | yes, via BitPay | BTC, BCH, ETH, DOGE, LTC, USDC and more | pay for your own server's hosting |
Sources: Maileroo's crypto page and Vultr's payment methods.
Crypto is easy to spend on hosting, harder on the big relays
One detail people miss: USDT is not on Vultr's listed coins, while USDC is. Stablecoin support differs between processors, and the network matters too (ERC-20 and TRC-20 are not interchangeable). Check both at checkout before you send funds.
Is paying for SMTP in crypto legal?
In the US, UK and most of the EU, paying a business in crypto is legal. A few countries restrict or ban crypto payments, so check where you are. Two points apply almost everywhere:
| Question | Short answer |
|---|---|
| Can I pay a provider in crypto? | yes, in most countries |
| Is spending crypto taxable? | often. The IRS treats digital assets as property, so a sale or spend can be a gain or loss |
| Does it change email law? | no. CAN-SPAM, GDPR and PECR apply the same way |
| Does it change the provider's rules? | no. Same acceptable use policy, same limits |
Crypto does not change the rules
This is where a lot of buyers get the wrong idea. Paying in crypto changes how you pay. It does not change what you are allowed to send.
- Same acceptable use policy. Maileroo says crypto buys "exactly the same plans" as a card. Its policy applies in full.
- Same complaint and bounce limits. Gmail's 0.3% spam ceiling does not care how you paid.
- Harder refunds. Crypto deposits are often non-refundable or refunded in a different amount after price swings.
Red flags in "anonymous SMTP for crypto"
Search for SMTP and crypto and you will find sellers whose pitch is anonymity. Some of them also sell email lists, "inbox SMTPs" and mailers. That combination is the problem.
| Red flag | Why it hurts you |
|---|---|
| "No KYC, no limits" | attracts spammers, so the IP range gets blocklisted |
| Sells email leads too | bought lists are banned by almost every provider and inbox |
| "Fresh SMTP logins" | often hacked accounts, your mail lands with stolen traffic |
| No published policy | nothing stops a bad neighbour on your IP |
| No PTR, SPF or DKIM help | authentication failures, see Gmail's sender rules |
If a seller's IPs are already on Spamhaus, your mail is judged by that neighbourhood from the first send. Our guide to red flags in cheap SMTP providers covers more of these.
Should you pay in crypto?
Where crypto fits depends on what you are buying
| Your situation | Best way to pay |
|---|---|
| You want Amazon SES, SendGrid or Mailgun | card or bank debit, crypto is not advertised |
| You want a relay and must pay in crypto | Maileroo or similar, after reading the policy |
| You run your own server | pay hosting in crypto where the host allows it, pay the one-time setup by card, PayPal or Wise |
| You are a crypto or Web3 company | see SMTP for crypto and Web3 companies for which providers accept the business itself |
What to check before paying a host in crypto
- Port 25. Many hosts block outbound port 25 on new accounts until you ask. Without it, the server cannot send. See why port 25 is blocked.
- Refund terms for crypto deposits. Some hosts do not refund them at all.
- Coin and network. Confirm the exact coin and chain at checkout.
- Extra IPs. Dedicated sending needs several IPs; check the host sells them and what they cost.
- Reverse DNS. You must be able to set a PTR record on each IP.
How BulkEmailSetup helps
We do not accept crypto today. We take cards and Stripe, PayPal, Wise, Western Union and wire transfer, plus UPI and bank transfer in India. What makes this workable for crypto-first buyers is the shape of the cost: our fee is one payment, and the recurring cost is your own hosting, paid to your host, which many hosts accept in crypto.
| Plan | One-time fee | Emails per day | Dedicated IPs | Hosting you pay your host |
|---|---|---|---|---|
| Basic | $549 | 25,000 | 3 | about $11 a month |
| Advance | $1,199 | 200,000 | 15 | about $49 a month |
You own the server, the IPs and the domains, with SPF, DKIM, DMARC and PTR set up, plus a campaign platform and a warm-up plan. There is no monthly fee to us and a 15-day money-back guarantee. See Basic plan details or all pricing.
Frequently asked questions
Which SMTP providers accept Bitcoin or USDT?
Maileroo says it accepts over 40 coins, including Bitcoin, Ethereum and major stablecoins, for the same plans as card buyers. Some smaller sellers also advertise crypto, but several of them also sell email lists, which is a warning sign. Large relays such as Amazon SES list cards and bank debit only. Check the coin and network at checkout before paying.
Is paying for SMTP with crypto legal?
In most countries, yes. Paying a business in crypto is legal in the US, UK and EU, though a few countries restrict crypto payments. In the US the IRS treats crypto as property, so spending it can be a taxable event. Paying in crypto does not change email law: CAN-SPAM, GDPR and PECR apply exactly the same way.
Do crypto payments change provider rules?
No. A provider that takes crypto still applies its acceptable use policy, complaint limits and bounce limits. Maileroo says crypto buys the same plans with the same rules. Paying in crypto does not make cold email or bought lists acceptable. It only changes how you pay, and refunds are usually harder because crypto deposits are often non-refundable.
Can I pay my VPS host in crypto too?
Often, yes. Vultr's billing docs list Bitcoin, Bitcoin Cash, Ethereum, Dogecoin, Litecoin, USDC and other coins through BitPay. Check two things before buying: whether the host allows outbound port 25 for email, and whether crypto deposits are refundable. Many hosts block port 25 on new accounts until you ask.
Does BulkEmailSetup accept crypto?
Not at the moment. BulkEmailSetup takes cards and Stripe, PayPal, Wise, Western Union and wire transfer, plus UPI and bank transfer in India. Because its setup fee is paid once, that is a single payment. The recurring cost is your own hosting, which you pay your host directly, and many hosts accept crypto for that.
Are no-KYC crypto SMTP services safe to use?
Usually not for anything you care about. Services that sell anonymous SMTP for crypto tend to attract spammers, so their IP ranges end up on blocklists and your mail is judged by that neighbourhood. Some also sell email lists or hacked SMTP logins, which can put your domain on blocklists for months. A clean, identified sender is what inboxes trust.
