66K+
Active Users
57K+
Messages Sent & Received
204+
Countries Supported
99.9%
Uptime

Mobile

Your own permanent eSIM with mobile data — never expires as long as it's renewed. Phone number pairing coming soon.

from €5 activation

  • eSIM — no physical SIM needed
  • €5/mo to start, down to €3 the longer you keep it
View Plans & Pricing

NEW

Blue Relay for iMessage

Dedicated iMessage lines hosted in Europe. Real blue bubbles with photos, files, and group chats — the monthly rate drops each renewal, API included.

from €89/mo

  • Real iMessage (blue bubble)
  • Photos, files & group chats
  • Price drops every renewal
Get Blue Relay

Everything Crypton offers

One place to compare every product. Stay on a plan, and several of them get cheaper.

Short-term Phone Numbers

Physical SIM numbers for 1–6 month rentals. Real hardware, encrypted SMS, and country-specific monthly rates below.

from €14–€28/mo
Poland €28/mo 10+ United Kingdom €14/mo 10+
  • 1–6 month flexible rentals
  • Physical SIM cards
Rent short-term Sign Up

Long-term Phone Numbers

Prepaid bundles from 3–12 months on dedicated physical lines. Each extension is 5% cheaper, down to 85%. Free outgoing SMS on Crypton and optional InPost SIM return.

from €56for 3 months
Poland €56 for 3 months 1
  • 3–12 month prepaid bundles
  • Free outgoing SMS on Crypton

Cheaper every time you extend

Rent long-term Sign Up
New

Crypton Travel eSIM

Travel data in 145+ countries. No phone number and no texts. Activate via QR code — no physical SIM needed.

from €1.08/mo
  • 145+ countries for travel data
  • No contract, top up anytime
  • Instant QR code activation

No account · instant install

Browse eSIM Plans Sign Up

Virtual Numbers

Cloud-based numbers for instant activation. SMS in and out with transparent per-country rates.

from €5.00/mo
Canada €5.00/mo 10+ Netherlands €12/mo 10+ United States €5.00/mo 10+
  • Instant activation
  • Global coverage
Rent a virtual number Sign Up

Email Forwarding & Aliases

Create email aliases across multiple privacy-focused domains and forward to any existing inbox.

from €1.00/mo
  • Email aliases
  • Forward to any email
  • Privacy-focused
Buy email aliases

Crypton Mobile

A permanent data eSIM. Voice, texts, and a US or UK number are not ready yet.

from €5.00 activation
  • Permanent eSIM line
  • Data top-ups
  • €5.00 today. Then €4.75. Down to €3.00.

Down to €3.00 if you stay

Get Crypton Mobile Sign Up

Crypton Line

An eSIM with a real mobile number. You choose the country.

from €20once
  • Calls and texts on a real number
  • 30 days only when the plan says so
  • One payment, no monthly fee
Choose a number

SMS Verification

Receive SMS verification codes from any service. One-time use numbers for account signups - fast, secure, and anonymous.

from €1.43/code
  • €1.50 flat rate per code
  • 30 minute session
  • 70+ services supported
Get Verification Code Sign Up
Free

Powerful API

Integrate our services into your applications. Send and receive messages programmatically with full encryption support.

Free
  • RESTful API
  • Full encryption support
  • Comprehensive documentation
View API Docs
EU/UK

Blue Relay for iMessage

Dedicated iMessage lines hosted in Europe. Real blue bubbles with photos, files, and group chats — the monthly rate drops each renewal, API included.

from €89/mo
  • Real iMessage (blue bubble)
  • Photos, files & group chats
  • Gets cheaper the longer you stay

Gets cheaper the longer you stay

Get Blue Relay Sign Up
Beta

Crypton AI

EU and US ZDR Chat and an OpenAI-compatible API. Zero retention at inference, encrypted history, and the same Crypton credits as everything else.

from €0.08/1M
  • EU and US ZDR lanes
  • Encrypted Chat history
  • OpenAI-compatible API
Get Crypton AI Sign Up

Bring Your Own Device

Run Crypton on hardware you already own — keep your privacy, lose the carrier. Also available self-hosted with Crypton BYOD Platform.

from €3.00/mo
  • Your Android, your SIM
  • Unlimited incoming SMS
  • €3.00 today. Then €2.85. Down to €2.55.

Down to €2.55 if you stay

Set up your device Sign Up

Partner Program

Earn recurring revenue by referring customers or hosting Crypton infrastructure.

50% revenue share
  • Recurring monthly earnings
  • USDT & XMR payouts
  • Use your own SIM cards
Become a partner

Companion App

Turns your Android device into a Crypton SMS gateway — for Partners, BYOD on crypton.sh, and self-hosted BYOD servers.

Free
  • Gateway for BYOD & Partners
  • Free to install
Get Companion App

Crypton for Android

Native client app — your full Crypton account, messages, and dashboard on your phone.

Free
  • Full account on mobile
  • Free APK download
Get Android app

Message Pricing

Outgoing rates below apply to virtual numbers and short-term rentals only. Long-term numbers and BYOD (via your device) are free on Crypton*.

Incoming
FREE
always
Outgoing
€0.00
per message (virtual & short-term)
Long-term & BYOD (via device): free*
Features
  • Incoming messages free on all number types
  • Outgoing SMS charged per message for virtual numbers and short-term rentals
  • No monthly messaging fees
  • Global SMS support*
  • Long-term numbers and BYOD (via your device) send free on Crypton*

*Some destinations restrict direct SMS through our carrier. Outgoing messages may be delivered via a secure link instead. View restricted countries.

*Free on Crypton means no account credit charge per outbound SMS. Long-term numbers still require adequate SIM operator balance. BYOD free sending applies when routing through your own device.

Get Started

Supported Payments

Cryptocurrencies recommended

For maximum privacy and anonymity, we recommend using cryptocurrency payments.
We support a wide range of cryptocurrencies including:

Monero Bitcoin Ethereum
USDT USDC BNB DOGE LTC TRX SOL POL BCH XRP SHIB GRAM

Credit card payments available

All major credit card providers are supported for your convenience.

Direct bank transfers are also available from UK, US, EU, and PL bank accounts.

Visa Mastercard Amex Apple Pay Google Pay WeChat Pay

Use Cases

What each part of the account is for.

Also in the account

These sit next to the number.

Email aliases Aliases on privacy domains that forward to an inbox you already have. Only you can read the messages. API Send and receive messages from your own app. Blue Relay Hosted iMessage. It is separate from SMS, and it is not a login code for another app. Crypton AI Chat and an API. You pay from your Crypton credits. Bring your own device Connect an Android phone and a SIM you already own. Partners Supply numbers or hardware and earn on the traffic you bring. Companion The Android app that links a phone you own to your account. Crypton for Android Open the account in the Android app.

How It Works

Get started with Crypton.sh in just a few simple steps

1

Sign Up

Create my account in seconds. Use an account number - no email required.

2

Choose Your Service

Select a physical number, virtual number, or Crypton Travel eSIM that fits your needs.

3

Activate & Use

Your number is activated instantly. Start receiving SMS or using Crypton Travel eSIM right away.

4

Stay Protected

All your messages are encrypted with your personal key. Your privacy is our priority.

Why Choose Crypton.sh

See how we compare to other services

Feature Crypton.sh Other Services
End-to-End Encryption Yes No
Open Source Code Yes No
Privacy-Focused Yes Limited
TOR Support Yes No
Cryptocurrency Payments Yes Limited
No Data Collection Yes No

Developer-Friendly API

Integrate Crypton.sh into your applications with our powerful REST API

RESTful API

Simple HTTP requests to send and receive messages programmatically

Webhook Support

Get real-time notifications when messages are received

Full Documentation

Comprehensive API documentation with code examples

SDK Support

Libraries available for popular programming languages

Quick Start Examples 

curl -X GET "https://crypton.is/api/v1/user" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Accept: application/json"
curl -X POST "https://crypton.is/api/v1/conversations/send-message" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d '{"conversation_uuid": "YOUR_CONVERSATION_UUID", "message": "Hello world!"}'
curl -X GET "https://crypton.is/api/v1/phones" \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Accept: application/json"
View API Documentation

FAQ

All of your frequently asked questions answered.

We store encrypted material on our servers, but we never see your passphrase, so we cannot open your messages ourselves. New accounts use ML-KEM-768 (post-quantum protection, NIST standard, related to Kyber) together with strong conventional crypto. Some older accounts may still use a previous RSA-style setup until keys are refreshed. When you are logged in, you can export a key backup from the dashboard.
You're right, nothing and nobody can be trusted, however we have made our best efforts be as transparent as possible and have therefore released our user encryption module source code on GitLab, you can access it by clicking the icon in the footer. The general rule is that you shouldn't provide any information you wouldn't want to be leaked.
No, while we make sure to encrypt any data stored on our servers / infrastructure, data is not being encrypted as soon as it exits our systems onto the GSM / CMDA network.
Use a physical SIM number (short-term or long-term) if you need a second account on Signal, Telegram, WhatsApp, or similar. Virtual numbers do not support 2FA or app verification — buy a physical number for that. You can also send regular SMS, or use Crypton Travel eSIM for travel data.
You can receive messages from anywhere and send to most countries. However, for short-term and virtual numbers, some countries have restrictions on direct SMS delivery. In these cases, your message is delivered via a secure web link instead. Long-term numbers use dedicated hardware and can send direct SMS to all countries without restrictions. Check our FAQ for the full list of affected countries.
More Questions & Answers

We're Here to Help

Get support when you need it, how you need it

Internal Support System

Create encrypted support tickets directly from your account. Get help with encrypted, secure communication.

SimpleX Chat

Reach us through SimpleX Chat for private messaging

Contact Support

Why Trust Crypton.sh

Built with privacy and security as our foundation

End-to-End Encryption

Your data is encrypted with keys only you can access

Open Source

Encryption module source code available on GitLab

Secure Infrastructure

Your data is stored on secure servers with privacy-focused hosting

No Message Reading

We cannot read your messages even if we wanted to

100%
Encrypted
0
Messages Read
24/7
Available
TOR
Supported

What Our Customers Say

Real reviews from real users who trust Crypton.sh for their privacy needs

Numbers are working everywhere. And this alone is quite rare… I have tried other services but the numbers were seen as reused by ex. Google.

Customer
Trustpilot

Crypton is a solid and reliable provider of mobile numbers for SMS verifications

Jon
Trustpilot

Great service! I am using it for a while and satisfied.

Ole
Trustpilot

Accepts monero, so it's a product for the people.

Neo
Trustpilot

It works great

Customer
Trustpilot

Great Service When Everything Works as Intended. Rented two numbers already as well as had an interaction with support about an issue I encountered. They were very helpful and added a feature to resolve my issue in less than a week.

Customer
Trustpilot

Been using Crypton.sh for a while now and overall it works well. I like the no-KYC policy and the encryption setup feels solid. Setup was smooth and delivery was quick. Support could be a bit faster, but aside from that it's been reliable so far. Good value for the price.

User
KYCnot.me

Affordable encrypted SIM service with strong privacy focus. Messages stay secure with personal key encryption.

Jack
KYCnot.me

Nice service, price is fair (14eur/mo), had no problems with numbers, I might be just lucky tbh

User
KYCnot.me