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Quantum-secure groupware from Germany.

Email, calendar, contacts, drive — end-to-end encrypted. Zero-knowledge, nobody reads along.

Data privacy

Last Update: April 2026

1. General Information

Aionda Mail takes the protection of personal data very seriously and processes it exclusively in accordance with applicable data protection laws, in particular the General Data Protection Regulation (GDPR) and the German Federal Data Protection Act (BDSG).

Please note that Aionda Mail is not an anonymous service. Personal data is neither sold nor shared with third parties. Furthermore, no online advertising is displayed on our website.

2. Processing and Storage of Personal Data

Aionda Mail follows the principle of data minimization and only stores the data necessary for the provision and functionality of the service.

a) Types of Stored Data
  • Email addresses (temporary and, if applicable, real email addresses for forwarding)
  • IP addresses (for abuse prevention and security monitoring)
  • Log data (timestamps and technical information about email traffic)
  • Session data (e.g., for authentication of logged-in users)
b) Data Retention Period

Personal data is only stored for as long as necessary for the respective purpose.

  • Email traffic logs can be viewed and managed by users according to their individual settings.
  • Database backups are stored in highly encrypted form on external servers. The private key for these backups is not stored on Aionda Mail servers.

3. Security of Email Communication

Aionda Mail implements state-of-the-art security measures to ensure the confidentiality and integrity of email communication.

  • Outgoing emails are sent using passive TLS encryption, provided the receiving email infrastructure supports it.
  • Email traffic is recorded in the logging function, which can be accessed by the respective user.

4. Website Security

The Aionda Mail website is accessible exclusively via an encrypted HTTPS connection (2048-bit SSL certificate). Our security measures are regularly reviewed and externally evaluated. The security service provider Qualys SSL Labs has rated our website with an "A+" security grade.

5. Use of Cookies

Aionda Mail only uses technically necessary cookies that are required for the basic functionality of the service.

  • These cookies primarily serve session management (session cookies).
  • No tracking or analytics cookies are used.

6. Use of a Content Delivery Network (CDN)

To optimize loading times and improve availability, Aionda Mail uses the Content Delivery Network (CDN) of Cloudflare, Inc., 101 Townsend St, San Francisco, CA 94107, USA.

Cloudflare processes certain technical connection data (e.g., IP addresses and access data) to securely and efficiently deliver the website. Cloudflare complies with the EU-U.S. Data Privacy Framework (DPF) as a replacement for the former Privacy Shield agreement. More information can be found in Cloudflare’s privacy policy: https://www.cloudflare.com/security-policy.

90,000+ users
Made in Stuttgart
GDPR compliant
Since 2002

Everything you need. Encrypted.

One platform for secure communication and organization — without compromising your privacy.

Encrypted mailbox

Full-featured email with folders, signatures, PGP support, and webmail — all end-to-end encrypted.

Encrypted calendar

Scheduling with invitations, recurrences, drag & drop, and ICS import — compatible with Outlook, Gmail, and Apple Mail.

Encrypted contacts

Address book with PGP key management and VCF import — encrypted in your vault.

Disposable addresses

Up to 10,000 email aliases that hide your real address. The original since 2002 — trusted by over 90,000 users.

Encrypted drive

Your personal cloud storage with end-to-end encryption. Upload, share, preview documents — nobody but you has access.

AI integration. Your way.

Three ways to use AI with your mailbox — from the browser to your own GPU infrastructure.

Local AI in the browser

AI assistant directly in the browser via WebLLM — no server round-trip, no data leakage. Your emails never leave your device. Translate, summarize, compose — all locally.

Cloud agents (OpenClaw)

Autonomous AI employees with their own mailbox and identity. Read, reply, and manage emails around the clock — like an employee, just without breaks.

MCP interface

Connect your own AI systems — Claude Code, Cursor, or your local LLM on Mac Studio / Nvidia DGX. Open protocol, own mailbox, disposable addresses included.

Post-quantum encryption. Now.

Your emails and documents from today must not become tomorrow's vulnerability.

Hybrid KEM

ML-KEM-1024 combined with X25519 — even quantum computers cannot break this encryption.

Zero-knowledge

Your password never leaves the browser. We cannot read your emails — even if we wanted to.

Shamir Secret Sharing

Three keys secure your mailbox: password, passkey, recovery key. Any two are enough to unlock.

Perfect Forward Secrecy

Every request uses unique keys. An intercepted request is worthless for all others.

"Harvest Now, Decrypt Later"

Intelligence agencies store encrypted data today to decrypt it with quantum computers tomorrow. Not with us.

For everyone who means it.

Whether personal or business — your communication deserves real protection.

Personal use

Protect yourself from tracking, spam, and nosy providers. Your mailbox belongs to you.

Business

Custom domains, team management, compliant archive, and AI agents — enterprise security without compromise.

Journalists

Source protection through zero-knowledge. Not even we know who you communicate with.

Activists

Post-quantum encryption protects your communication even against state-level surveillance.

Doctors & lawyers

Professional secrets deserve maximum protection. GDPR-compliant, encrypted, hosted in Germany.

How we stand out.

Transparent comparison — so you can make the right choice.

Feature Aionda Mail Tuta Proton Mail
Post-quantum crypto ✓ ✓ ●
Zero-knowledge ✓ ✓ ✓
Disposable addresses ✓ ✗ ✗
Encrypted calendar ✓ ✓ ✓
Encrypted contacts ✓ ✓ ✓
AI agents ✓ ✗ ✗
Local browser AI ✓ ✗ ✗
MCP interface ✓ ✗ ✗
Shared folders (E2E) ✓ ✗ ✗
Encrypted document storage ✓ ✗ ●
Custom domains ✓ ✓ ✓
Location Germany Germany Switzerland

Enterprise security for your team.

Everything businesses need — encrypted and under your control.

  • Shared folders with end-to-end encryption
  • Team management with roles and permissions
  • AI agents that work on behalf of your team
  • Custom domains with SPF authentication
  • Compliant, encrypted archive
Discover Enterprise
Aionda Mail Enterprise Dashboard — Team Management, Shared Folders, Usage Statistics

Simple pricing. No fine print.

Start for free — upgrade when you're ready.

Free

0
  • Up to 25 disposable addresses
  • Encrypted mailbox
  • Calendar & contacts
Sign up for free
POPULAR

Plus

1.99 € / month
  • Up to 10,000 disposable addresses
  • Unlimited forwarding
  • Custom domains
  • Calendar invitations
  • 1 GB encrypted drive
  • Email support
Get Plus

Enterprise

From 1.49 € / employee / month
  • Plus subscription required
  • Team management
  • AI agents
  • Compliant archive
  • Priority support
Start Enterprise

Frequently asked questions

What is post-quantum encryption?
Post-quantum encryption uses algorithms that cannot be broken even by future quantum computers. Aionda Mail uses ML-KEM-1024 combined with X25519 (Hybrid KEM) — the current NIST standard.
What does zero-knowledge mean?
Zero-knowledge means the server never has access to your unencrypted data. Your password never leaves the browser, emails are encrypted client-side. Even we as operators cannot read your content.
How is this different from Tuta or Proton Mail?
Aionda Mail offers post-quantum encryption, disposable email addresses, AI agents, and shared folders with end-to-end encryption — features that neither Tuta nor Proton Mail offer in this combination.
Can I use my own domain?
Yes. Plus members can connect custom domains with SPF authentication. Your emails are received and sent under your own domain.
What happens if I forget my password?
Thanks to Shamir Secret Sharing, you have three independent access paths: password, passkey (fingerprint), and recovery key. Any two are enough to unlock your mailbox. A classic password reset is deliberately impossible — that's the proof that we cannot read your data.
Is Aionda Mail GDPR compliant?
Yes. Aionda Mail is operated by Aionda GmbH in Stuttgart, Germany. All servers are located in Germany. The zero-knowledge architecture additionally protects your data technically — even in case of a data breach, the data would be worthless.

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