PostSeal
PostSeal is an open source secure mail client, a viable open source alternative to ProtonMail. It offers end-to-end encryption, fully anonymous messaging, cross-platform support, and no cost. It protects user privacy and data.
encryption
privacy
open-source
email
PostSeal: Open Source Secure Mail Client
Open source secure mail client offering end-to-end encryption, fully anonymous messaging, cross-platform support, and no cost, protecting user privacy and data.
What is PostSeal?
PostSeal is an open-source end-to-end encrypted email service and client. As an alternative to ProtonMail, PostSeal provides many similar features focused on privacy and security.
Key features of PostSeal include:
- End-to-end encryption using OpenPGP - messages are encrypted on the client side before being transmitted.
- Anonymous messaging - no personal information required to create an account.
- Open source software - the codebase is transparent and open to independent verification.
- Cross-platform clients - apps for major platforms like Windows, Mac, Linux, iOS and Android.
- No cost - entirely free to use with no paid tiers.
- User-friendly interface - easy to use for encryption novices.
Overall, PostSeal prioritizes user privacy while providing a full-featured encrypted email solution. With accessible apps across all devices and zero cost, it removes barriers for protecting communications via encryption compared to closed-source tools like ProtonMail.
PostSeal Features
Features
- End-to-end encryption
- Fully anonymous messaging
- Cross-platform support
- Open source code
Pricing
- Open Source
Pros
Free and open source
Strong encryption
User privacy focused
Anonymous messaging
Cross-platform availability
Cons
Limited features compared to paid options
Smaller user base than proprietary options
Open source code could allow exploits
Official Links
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