Feature | FastMail | ProtonMail |
---|---|---|
Built-in Calendar | ||
POP3 Support | ||
Ad-free | ||
Support for Aliases | ||
CalDAV | ||
CardDAV | ||
Contacts | ||
File Storage | ||
Integrated Spam Protection | ||
Email Server | ||
Sieve filtering | ||
SMTP | ||
Basic html mode | ||
Custom Backgrounds | ||
Integrated Chat | ||
Integrated Search | ||
End-to-End Encryption | ||
Privacy focused | ||
Security & Privacy | ||
Encrypted Email | ||
Custom domain | ||
Support for IMAP | ||
File-organization | ||
Calendar integration | ||
Encrypted mail and contacts | ||
Document sharing | ||
Push Notifications | ||
Cloud Storage | ||
Mail collector | ||
Multiple Account support | ||
Chat | ||
Digital Signage | ||
Encryption | ||
Anonymity | ||
Web hosting | ||
Encrypted email | ||
End-to-end encryption | ||
4096 Bit encryption | ||
Anonymous email | ||
E2e encryption | ||
Encrypted Connection | ||
Mobile friendly | ||
Multiple languages | ||
Support for Multiple Users | ||
PGP Encryption | ||
Self destructing messages | ||
Video Conferencing | ||
Cloud IDE | ||
Decentralized | ||
Support for TOR | ||
Mail filtering |