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About Aster Mail
What is Aster Mail?
Aster Mail is a private, end-to-end encrypted email service hosted in Germany, offering a generous free forever plan with 10 GB storage, no ads, no scanning, and no AI. It is designed for individuals and businesses who want to take back control of their inbox from data-hungry providers.
Who is it for?
Aster Mail is ideal for journalists, founders, families, and anyone privacy-conscious seeking a secure email alternative to Gmail or Outlook. It is not for users who require extensive collaboration features or team management, as it focuses primarily on individual privacy and encryption.
Key use cases
Journalists can protect sources with zero-access encryption, founders can secure business communications with custom domains, and families can share a private email domain. With QuickSwitch, you can migrate from Gmail, Outlook, or any IMAP account in under 60 seconds, preserving folders and contacts.
Why choose Aster Mail?
All services are open source (AGPL-3.0), funded by users, not ads, and include post-quantum cryptography (ML-KEM) to future-proof your data. Free custom domains even on the free plan, and cross-platform access via Aster Bridge for your favorite mail app.
Key features
- End-to-end encryption — Emails are encrypted on your device before reaching servers, so no one but you can read them.
- Free custom domains — Use your own domain at no extra cost, even on the free plan.
- QuickSwitch migration — Import years of email from Gmail, Outlook, Yahoo, or any IMAP account in two clicks.
- Post-quantum cryptography — ML-KEM key exchange protects your emails against future quantum attacks.
- Tracker & remote-image blocking — Prevent malicious tracking pixels and increase privacy.
- Zero-access architecture — Your data is unreadable even to Aster Mail staff.
- Open source — All code is on GitHub, auditable by anyone.
SaaSpartout Score
7.6
/10
Editorial score from our review methodology — not user ratings.
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Aster Mail Pricing
Aster Mail pricing: from $2.99/mo.
For comparison: the median starting price in Communication is $15.99/month, measured across 153 tools we track. See the full SaaS Pricing Index →
Free Plan — $0/mo
10 GB encrypted storage, 5 email aliases, 1 custom domain, 25 MB attachments, 2 mail rules, end-to-end encryption, zero-access architecture, tracker blocking, priority support (no credit card required).
Star — $2.42/mo (billed annually, $2.99 monthly)
50 GB encrypted storage, 15 email aliases, 5 custom domains, 50 MB attachments, unlimited mail rules, plus all free features.
Nova — $7.25/mo (billed annually)
500 GB encrypted storage, unlimited email aliases, 30 custom domains, 100 MB attachments, unlimited mail rules, advanced aliases.
Supernova — $14.50/mo (billed annually)
5 TB encrypted storage, unlimited email aliases, unlimited custom domains, 250 MB attachments, unlimited mail rules, dedicated support. All paid plans include a 30-day money-back guarantee. Student or journalist? 30% off individual plans for 12 months.
Frequently asked questions
Is Aster Mail free?
Yes, Aster Mail offers a free forever plan with 10 GB storage, 5 email aliases, 1 custom domain, and end-to-end encryption, no credit card required.
How much does Aster Mail cost?
Paid plans start at $2.99/mo (billed monthly) or $2.42/mo billed annually for the Star plan. Nova is $7.25/mo and Supernova is $14.50/mo (annual billing).
What is Aster Mail used for?
Aster Mail is used for private, end-to-end encrypted email communication, ideal for journalists, founders, families, and anyone seeking to protect their inbox from surveillance and data mining.
How does Aster Mail compare to ProtonMail?
Aster Mail offers a more generous free tier (10 GB vs 1 GB) and includes post-quantum cryptography. Both are hosted in privacy-friendly jurisdictions (Germany vs Switzerland) and offer open-source clients.
Can I use my own domain with Aster Mail?
Yes, you can use your own custom domain even on the free plan, and up to 30 custom domains on higher tiers.
Can I migrate from Gmail to Aster Mail?
Yes, Aster Mail's QuickSwitch allows you to import all your emails from Gmail, Outlook, Yahoo, or any IMAP account in a couple of clicks, preserving folders and contacts.
