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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.

About

HIPAA compliant email made easy and affordable. MailHippo is the easiest way to securely send and receive sensitive information and attachments by email. There's no setup or configuration required. Just sign up and start sending and receiving HIPAA-compliant emails right away. End-to-end encryption means your sensitive emails and attachments are always secure, both in transit and at rest. MailHippo works with your current email address, and with any email provider. MailHippo looks and works great on any smartphone or tablet. Get a unique link that empowers you to receive totally-secure emails from anyone. Get our HIPAA-compliant email platform with secure encrypted email messaging for FREE during our limited-time Beta program!

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Privacy-conscious users

Audience

Organizations that need a HIPAA compliant email service

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$4.95 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Aster Mail
Founded: 2025
United States
astermail.org

Company Information

MailHippo
Founded: 2019
United States
www.mailhippo.com

Alternatives

Alternatives

LuxSci

LuxSci

Lux Scientiae
Proton Mail

Proton Mail

Proton AG
Send It Secure

Send It Secure

Protected Trust
Aspida Mail

Aspida Mail

Aspida

Categories

Categories

Email Security Features

Anti Spam
Anti Virus
Email Attachment Protection
Encryption
Policy Management
Quarantine
Reporting/Analytics
Whitelisting / Blacklisting

Integrations

Microsoft Outlook

Integrations

Microsoft Outlook
Claim Aster Mail and update features and information
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