Email, private not by policy, but by design.

Full zero-knowledge post-quantum encrypted email for those who value privacy and simplicity.

INK is invite-only. Public registration runs periodically, or ask a friend for an invite. You can also reach us at invite@ink.email

(o^-')b Cool, can you tell me more?›››

We built INK modern.

Decentralization

A web3 address for storing data and communicating on the blockchain.

Temporary Mail & Aliases

Spin up a disposable address or an alias. For shady sites or anonymity.

Connect or Import

Add or migrate in one click from Gmail, Yahoo, Outlook, or other providers.

Open Source

Privacy is more than a promise. Anyone can verify our source code.

Simple Onboarding

The hardest part wasn't building the most secure email architecture.
It was making it easier to use than the most popular one.

Selective Privacy

Other private email providers lock you into a closed, often immature ecosystem:

INK keeps it optionally closed. Connect to any external service. We'll warn you about the risks, nothing more:

Real utility. Not buzzwords.

Modular Comfort

Features others charge for or never bother to build, included for free:

Signature generator
Optional AI agent integrations
Email templates
Auto-reply templates

Function Forward

Every pixel works. Nothing is here just to look busy.

We studied real user needs instead of overloading the interface with corpo-slop.
Even the app bundle is built to weigh 1/3 of competitors, just from architectural economy.

ヾ(⌐■_■)/ What about security?›››

Private not by policy, but by design:

OPAQUE

Zero-knowledge auth per RFC 9497. Password never leaves your device.

ML-KEM-768 + X25519

Hybrid key encapsulation resistant to both classical and quantum attacks.

Argon2id + HKDF-SHA256

Password to master key via memory-hard Argon2id, then deterministic subkey derivation with HKDF.

BLAKE2b

High-performance cryptographic hashing for message integrity verification.

XChaCha20-Poly1305

Authenticated encryption with 192-bit nonces. Tamper-proof by design.

Forward Secrecy

Each session uses unique ephemeral keys. A compromised key cannot decrypt past traffic.

Ed25519 + ML-DSA-65

Dual-layer signatures valid today and safe against future quantum threats.

Envelope Encryption

Message bodies and metadata (headers, subjects, timestamps and routing data) are encrypted alongside.

Ephemeral-Key Storage

Optional hardening layer. Disk encryption keys live only in RAM. Power loss renders all storage unreadable.

ZERO KNOWLEDGE

We don't even know your name. We just know you exist. And that's enough for us.

01
Plaintext

02
End-to-End Encrypted

Most stop here. Buzzwords, just MITM protection.

03
Post-Quantum Cryptography

?

04
Zero-Knowledge

Though real security requires this.

(•̀ᴗ•́)و And the competitors?›››

Judge by facts, not marketing.

Features	INK	Tuta	ProtonMail	EtherMail	Mailbox
Zero-access encryption
Crypto payments
Password emails
Open source client
Email migration tool
E2EE PQC encryption
No-backdoor jurisdiction
No IP logging
ZK auth (OPAQUE)
Forward secrecy
Key rotation & recovery
Decentralization
RAM-only servers
Temporary email
Third-party integrations