Can I use auto-refill while paying with cryptocurrency?

Auto-refill in Valid Email Checker only works with saved credit or debit cards. Cryptocurrency payments are fully supported for manual one-time credit purchases — Bitcoin, Ethereum, Litecoin, USDT, USDC, and a long list of other tokens — but they cannot drive automatic refills. This is a structural limitation of how crypto works as a payment method, not a policy choice we could relax.

Why crypto cannot do automatic refills

A crypto payment requires you, the customer, to actively initiate a transfer from your wallet. We give you an invoice with an address and an amount; you open your wallet app, sign the transaction with your private key, and broadcast it to the network. There is no equivalent of a saved card token — no stored credential we can charge unilaterally when your balance gets low. Even with hosted wallet services, the user signature is always required at the moment of the spend. Automating a charge against your wallet would require us to hold your private key, which is the one thing a self-custody crypto setup is built to prevent.

What you can do with crypto

• Buy PAYG credits manually at any time on the Buy Credits page. Pick a tier, pick crypto, send the payment, credits land once the network confirms.
• Start a monthly subscription with crypto for the initial month. After that, the subscription renewal still needs to be paid manually each month.
• Top up before a big job. If you know a bulk verification is coming, buy a generous chunk of credits with crypto a few hours ahead so you have a buffer.

What you cannot do with crypto

• Enable auto-refill — the toggle in the dashboard will prompt you to add a card first.
• Set up scheduled subscription renewals that bill themselves on the same day every month — every renewal requires a fresh manual payment.
• Use any feature that requires "card on file" — currently just auto-refill, but anything similar in the future will have the same limitation.

The hybrid setup most crypto users adopt

Plenty of Valid Email Checker users pay for their main credits with crypto (no recurring card charges) but keep a small card on file specifically to power auto-refill. The card is only ever charged when auto-refill triggers, which is exactly the situation where waiting for a manual wallet payment would defeat the purpose. The bulk of your spend stays on crypto; the safety net runs on the card. You can add a card without making it your default payment method for manual purchases — they remain two separate decisions.

What happens if you delete the card later

If you delete the card you were using for auto-refill, the next time auto-refill tries to fire it will have no card to charge. You will receive a failure notification and after three such attempts the feature will auto-suspend per the normal 3-failure rule. If you want to keep using crypto for everything but you still need a balance safety net, the practical alternative is to set conservative manual reminders (calendar entries) to top up well before the balance gets low.