Related Products
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About
Aster Mail is a free, open-source, end-to-end encrypted email service for people who want real privacy without the technical overhead. All encryption happens on your device before anything reaches our servers, so we have zero access to your messages or metadata.
Aster uses standard OpenPGP with portable RSA-4096 keys, so you're never locked in. Your keys work with GPG, Thunderbird, or any PGP client, and they're discoverable through WKD and public keyservers. Aster-to-Aster messages use a Signal-inspired X3DH and Double Ratchet protocol for forward secrecy.
Every plan includes encrypted email, custom domain support, free aliases, tracker protection, and full access across web and desktop. The entire codebase is published under AGPL v3 on GitHub, fully auditable, with a public warrant canary and documented vulnerability disclosure.
Free plan includes 10 GB encrypted storage, 5 aliases, and 1 custom domain. Paid plans start at $2.99/month. Servers located in Germany.
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About
Skiff is a private, end-to-end encrypted workspace with Mail, Calendar, Pages, and Drive products for completely secure communication and collaboration.
All Skiff products are designed with security and privacy in mind. All apps are built with end-to-end encryption (E2EE), so you never have to share your personal information, sensitive data, or private keys with anyone else. At all times, only you can access the content of your emails.
Generous free tier
- Enjoy 10 GB of free storage for your email, attachments, documents, and notes.
- Create up to 4 free email aliases to protect your identity.
Open-source and audited
- Skiff Mail is open-source, uses open-source cryptography, and undergoes external security audits.
- You can access our whitepaper and code at skiff.com.
No trackers or ads
- Sign up and upgrade without sharing any personal information; use crypto payments in many different currencies to upgrade.
- Your data is never collected, sold, or shared.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Privacy-conscious users
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Audience
Enterprises seeking a private, secure workspace with email, calendar, drive, and notes.
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and VideosNo images available
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Screenshots and Videos |
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Pricing
No information available.
Free Version
Free Trial
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Pricing
No information available.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationAster Mail
Founded: 2025
United States
astermail.org
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Company InformationSkiff
Founded: 2020
United States
www.skiff.com
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Categories |
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Integrations
No info available.
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Integrations
No info available.
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