Crypton.sh FAQ — the plain-language answers

Yes. Crypton.sh has been operational since 2018, runs a zero-access encryption architecture (the server cannot decrypt user messages), publishes a security.txt and a public PGP key, and maintains a transparency page covering law-enforcement requests. It is consistently rated 4–5 stars on Trustpilot and KYCnot.me.

No. You register with a username and password only. No email, no real name, no ID upload. This is a deliberate design choice, not a temporary policy.

Monero (XMR), Bitcoin (BTC), Bitcoin Lightning, several other cryptocurrencies, and card via a payment processor. Crypto, especially Monero, is treated as a first-class payment method.

No. Messages are encrypted with a key derived from your password before they are stored. The server holds ciphertext only and cannot decrypt your inbox, even if compelled to.

Your encrypted inbox cannot be recovered. There is no recovery key on the server side — that's the same property that prevents the operator from reading your messages. Store your password safely.

Physical numbers are real SIM cards in Crypton's own hardware, and behave as fresh, unburned numbers — services like Google or Telegram accept them as new. Virtual numbers come from upstream carriers; cheaper and available in more countries, but sometimes rejected by services that filter virtual ranges. More detail in our Secure SMS review.

Long-term rentals are dedicated to you for 1–12 months and use a dedicated outbound gateway. Short-term rentals are monthly and use a shared gateway. Both are end-to-end encrypted on Crypton.sh's side.

Yes. You can add new numbers or change rental types at any time from the dashboard.

For most users, yes — particularly with physical numbers. We recommend physical numbers for any service you plan to keep long-term.

Yes. Incoming SMS is free; outgoing is paid per message.

Travel eSIM is data only and pay-as-you-go. Crypton Mobile is a full mobile line with voice, SMS and data on a permanent number, billed monthly. Pick Crypton Mobile when you want a real mobile number; pick Travel eSIM for data while travelling.

Scan the QR code in your account or guest checkout email. Any modern eSIM-capable phone supports this. Activation takes under a minute.

No. Crypton Mobile has its own billing and dashboard so it can operate as a standalone carrier service.

145+ countries with single-country, regional and global packs. See the eSIM review.

Yes. You can buy more data at any time and assign it to the same eSIM profile. No contract.

Pick a service, pay €1.50 in crypto, receive a one-shot number for a 30-minute session, paste it into the target service's signup flow, and read the incoming SMS code in your Crypton.sh dashboard. Details in the Verification review.

No. The verification number is one-shot for 30 minutes. For ongoing 2FA, rent a Secure SMS number instead.

A Crypton.sh email alias is a unique address that forwards mail to your real inbox. The sender never sees your real address. Replies are rewritten so the sender always sees the alias.

Yes. Aliases can be paused or deleted at any time from the dashboard.

Yes — a RESTful API for sending and receiving SMS, listing numbers, managing webhooks, and reading delivery status. Documentation is on crypton.sh. See the API review.

No. API access is included with any number at no surcharge.

Either polled via the API or pushed to a webhook URL you configure. Both deliver encrypted ciphertext, which you decrypt locally.

Not at this time. The API is SMS-focused.