Aster Mail
A US-incorporated service with servers hosted in Germany. Mail between Aster users is end-to-end encrypted, including subject lines, while mail from other providers is encrypted on arrival. Note: The service launched in 2026, so has a limited track record, and has not been independently audited.
Key Info: Aster Mail
Jurisdiction
United States (5 Eyes)
Encryption
PGP (post-quantum hybrid for internal mail)
Open Source
Client Apps Only
Onion Site
Yes
Pricing
Free Plan - 10 GB, 5 aliases, 1 custom domain. Star plan from $2.42/mo (annual) or $2.99/mo, with 50 GB, 15 aliases and IMAP access
Custom Domain
Yes (1 on Free Plan)
Aliases
Yes (5 on Free Plan, 15 in Star, $2.99/m) Catch-all on paid plans only
Mail Client Support
Yes, but through Bridge (Star Plan, $2.99/m)
Security Audit
No
Accepts Crypto
Yes (BTC, XMR and USDC)
Personal Info Required
None
Mobile App
Yes (Android only; iOS in beta)
Active Development
Yes
Links
Reviews
Have you used Aster Mail? Help other users make an informed decission, by leaving your feedback!
Reviews are posted on GitHub (using Discussions). The aim of which is to be as transparent as possible.
No user review will be deleted unless obviously spam or offensive. Note that we will display your GitHub name and picture (as well as profile age + follower account, to give creadibility to the review). You may still leave a review, even if you you're associated with the service, but you MUST disclouse your affiliation.
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