Average Ratings 0 Ratings
Average Ratings 108,634 Ratings
Description
Aster Mail is a complimentary, open-source email service that offers end-to-end encryption for users seeking genuine privacy without cumbersome technical requirements. The encryption process occurs directly on your device, ensuring that our servers never have access to your messages or any associated metadata.
Utilizing the widely accepted OpenPGP standard with RSA-4096 keys, Aster ensures that you are not bound to a single provider; your keys can be used seamlessly with GPG, Thunderbird, or any compatible PGP client, and they are easily discoverable via WKD and public key servers. For communications between Aster users, the service employs a Signal-inspired X3DH and Double Ratchet protocol, providing enhanced forward secrecy.
Each subscription tier comes with encrypted email capabilities, support for custom domains, free aliases, protection against trackers, and unrestricted access across both web and desktop platforms. The complete codebase is available under the AGPL v3 license on GitHub, allowing for thorough audits, and it features a public warrant canary along with a clear vulnerability disclosure policy.
The free tier provides 10 GB of encrypted storage, along with 5 aliases and 1 custom domain. Paid subscriptions begin at just $2.99 per month, and all servers are conveniently located in Germany, ensuring compliance with stringent data protection regulations. Users can feel secure knowing their communications are protected by top-notch encryption standards.
Description
Secure your company’s communications with Proton Mail — the business email solution trusted by over 50,000 organizations. With end-to-end encryption built in, your internal and external communications stay confidential by default. Proton Mail helps your business meet GDPR, HIPAA, and other compliance standards, while giving you full control over your data under strong Swiss privacy laws. Empower your team with encrypted email and calendar, support for your custom email domains, professional branding, and simple migration from providers like Google Workspace or Microsoft 365 — no IT team required.
API Access
Has API
No
API Access
Has API
No
Screenshots View All
No images available
Integrations
All-in-One Messenger
No
Authy
No
Canary Mail
No
ClearMyInbox
No
Franz
No
Microsoft Outlook
No
Postbox
No
Proton Calendar
No
Proton Drive
No
Proton Meet
No
Integrations
All-in-One Messenger
Yes
Authy
Yes
Canary Mail
Yes
ClearMyInbox
Yes
Franz
Yes
Microsoft Outlook
Yes
Postbox
Yes
Proton Calendar
Yes
Proton Drive
Yes
Proton Meet
Yes
Pricing Details
No price information available.
Free Trial
No
Free Version
Yes
Pricing Details
$6.99/user/month
Mail Business plans include an up to 13% offer:
Mail Essentials at $6.99/month/user billed annually.
Workspace Standard at $12.99/month/user billed annually.
Workspace Premium at $19.99/month/user billed annually.
Mail Essentials at $6.99/month/user billed annually.
Workspace Standard at $12.99/month/user billed annually.
Workspace Premium at $19.99/month/user billed annually.
Free Trial
Yes
Free Version
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
Yes
iPad App
Yes
Android App
Yes
Windows
Yes
Mac
Yes
Linux
Yes
Chromebook
Yes
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
Yes
iPad App
Yes
Android App
Yes
Windows
Yes
Mac
Yes
Linux
Yes
Chromebook
No
Customer Support
Business Hours
No
Live Rep (24/7)
No
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
Yes
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
Aster Mail
Founded
2025
Country
United States
Website
astermail.org
Vendor Details
Company Name
Proton AG
Founded
2014
Country
Switzerland
Website
proton.me/business/mail
Product Features
Product Features
Calendar
Calendar Sync
Yes
Collaboration Tools
Yes
Multi-Device Support
Yes
Reminders
Yes
Room Booking
No
Scheduling
Yes
Task Manaagement
Yes
Email Management
Data Recovery
Yes
Email Archiving
Yes
Email Deletion
No
Email Discovery
No
Email Monitoring
No
Email Recall
No
Queue Manager
No
Response Management
Yes
Routing
No
Shared Inboxes
No
Signature Management
Yes
Spam Blocker
Yes
Whitelisting / Blacklisting
No
Encryption
Central Policy Enforcement
No
Drag & Drop UI
Yes
Email Encryption
Yes
Encryption Key Management
Yes
Endpoint Encryption
Yes
File Compression
No
File Encryption
Yes
Full Disk Encryption
No
Public Key Cryptography
Yes
Tokenization / Data Masking
No
