Encrypted Email Services

Modern email clients make professional and personal communication more convenient than ever before. That being said, some of the most popular email clients, such as Gmail, aren’t as secure as some would like. That’s where the email service providers on this page, such as ProtonMail, come in.

Proton Mail
Freemium • Open Source
WebMail Provider
Email Client
Calendar App
Linux
Online
Android
iPhone
iPad
Tor
86 alternatives to Proton Mail
Secure email with absolutely no compromises, brought to you by MIT and CERN scientists.
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Proton Mail Features
1. End-to-End EncryptionProton Mail has E2E Encryption, for entire or parts of the app.
2. Privacy focusedProton Mail is considered a privacy friendly alternative.
3. Ad-freeProton Mail doesn't contain any form of external advertising.
4. Two-factor AuthenticationProton Mail supports two-factor authentication (2FA).
5. PGP EncryptionProton Mail supports PGP, an encryption system used for sending encrypted emails and files.
6. No TrackingProton Mail will not track you or use your personal data.
7. Self Destructing MessagesProton Mail supports the use of private messages that will be auto deleted according to a specified time or action.
8. Dark ModeProton Mail supports dark mode for comfortable usage in low light conditions.
9. OpenPGPProton Mail supports OpenPGP, a standard of PGP encryption that is open-source for public use.
Encrypted Email
Mobile friendly
Anonymous Email
Custom Domain
IMAP Support
Filters
Support for Multiple Users
Integrated Spam Protection
Custom Link Alias
Honeypot
Top 3 alternatives
Tutanota
Freemium • Proprietary
WebMail Provider
Email Client
Calendar App
Mac
Windows
Linux
Online
Android
iPhone
iPad
Self-Hosted
Flathub
F-Droid
78 alternatives to Tutanota
Tutanota is the world's most secure email service, easy to use and private by design. You get fully encrypted calendars and contacts with all our personal and business email accounts. It has open source iOS and an Android apps.
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Tutanota Features
1. Privacy focusedTutanota is considered a privacy friendly alternative.
2. End-to-End EncryptionTutanota has E2E Encryption, for entire or parts of the app.
3. Dark ModeTutanota supports dark mode for comfortable usage in low light conditions.
4. Multiple Account supportTutanota support multiple accounts without the need to logout and login
5. LightweightTutanota consumes less device resources compared to similar apps.
6. Email OrganizerTutanota allows you to take control of your inbox by filtering and control tools.
7. Ad-freeTutanota doesn't contain any form of external advertising.
8. No TrackingTutanota will not track you or use your personal data.
9. Calendar IntegrationTutanota lets you sync your tasks and events with your calendar application.
Encrypted Email
Custom Domain
Encrypted calendar
Contacts
Integrated File Sharing
Clean design
Encrypted Connection
Sync Contacts
Web-Based
Top 3 alternatives
Disroot
Free • Open Source
WebMail Provider
Online
F-Droid
27 alternatives to Disroot
Disroot is a platform providing online services based on principles of freedom, privacy, federation and decentralization.
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Disroot Features
1. Privacy focusedDisroot is considered a privacy friendly alternative.
2. DecentralizedDisroot is based on a decentralized infrastructure with no single entity controlling it.
3. Ad-freeDisroot doesn't contain any form of external advertising.
4. End-to-End EncryptionDisroot has E2E Encryption, for entire or parts of the app.
5. Support for AliasesDisroot supports aliases, so you can receive email without exposing your main email address
6. No TrackingDisroot will not track you or use your personal data.
Encrypted Email
Can be used outside browser
IMAP Support
SMTP Support
Support for SFTP
Diaspora integration
Nextcloud integration
Cloud IDE
Top 3 alternatives
Evolution
Free • Open Source
Email Client
Calendar App
Linux
BSD
S/MIME
GNOME
OpenPGP
Flathub
82 alternatives to Evolution
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality. Evolution supports a wide range of industry standard data formats and network protocols for information exchange, with an emphasis on...
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Evolution Features
1. Calendar IntegrationEvolution lets you sync your tasks and events with your calendar application.
2. Calendar ViewEvolution has a built-in calendar view to have a clear overview of your content over time.
3. Ad-freeEvolution doesn't contain any form of external advertising.
4. Multiple Account supportEvolution support multiple accounts without the need to logout and login
5. GPG EncryptionEvolution supports GPG (aka GnuPG) for encryption of things like emails, messages, files, etc.
6. Spam FilterEvolution can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
7. RemindersEvolution allows you to set reminders for tasks, events or actions, based on parameters of time, place or condition.
8. Sync with Google CalendarEvolution can be synchronized with Google Calendar
Contacts
CalDAV Support
Encrypted Email
CardDAV Support
Personal Information Manager (PIM)
IMAP Support
Exchange
POP3 Support
Multiple languages
Integrated Spam Protection
Top 3 alternatives
GnuPG
Free • Open Source
Mac
Linux
PortableApps.com
Xfce
OpenPGP
43 alternatives to GnuPG
GnuPG allows to encrypt and sign your data and communication, features a versatile key management system as well as access modules for all kinds of public key directories. GnuPG, also known as GPG, is a command line tool with features for easy integration with other applications.
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GnuPG Features
1. PGP EncryptionGnuPG supports PGP, an encryption system used for sending encrypted emails and files.
Security focused
Encrypted Email
Top 3 alternatives
Delta Chat
Free • Open Source
Encrypted Chat App
Instant Messenger
Group Chat App
Mac
Windows
Linux
Android
iPhone
Android Tablet
FLATHUB
F-Droid
56 alternatives to Delta Chat
Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.
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Delta Chat Features
1. DecentralizedDelta Chat is based on a decentralized infrastructure with no single entity controlling it.
Encrypted Email
IMAP Support
Multiple languages
Electron based
Top 3 alternatives
eM Client
Freemium • Proprietary
Email Client
Calendar App
Mac
Windows
64 alternatives to eM Client
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
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eM Client Features
1. Calendar IntegrationeM Client lets you sync your tasks and events with your calendar application.
2. Multiple Account supporteM Client support multiple accounts without the need to logout and login
3. PGP EncryptioneM Client supports PGP, an encryption system used for sending encrypted emails and files.
4. Dark ModeeM Client supports dark mode for comfortable usage in low light conditions.
5. Unified inboxView e-mails (or similar) from all accounts in one unified view with eM Client.
6. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
7. Email OrganizereM Client allows you to take control of your inbox by filtering and control tools.
8. Sync with Google CalendareM Client can be synchronized with Google Calendar
9. Automatic BackupeM Client will automatically back up your data periodically.
IMAP Support
Exchange
CardDAV Support
CalDAV Support
Contacts
Gmail integration
Calendar Sync
POP3 Support
Email preview
Sync Contacts
Top 3 alternatives
Posteo
Paid • Open Source
WebMail Provider
Email Client
Calendar App
Online
62 alternatives to Posteo
Posteo is an independent email service provider. Based in Berlin since 2009. With focus on security, privacy, and sustainability. They offer ad free paid email accounts for individuals and businesses.
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Posteo Features
1. Privacy focusedPosteo is considered a privacy friendly alternative.
2. Calendar IntegrationPosteo lets you sync your tasks and events with your calendar application.
3. PGP EncryptionPosteo supports PGP, an encryption system used for sending encrypted emails and files.
4. End-to-End EncryptionPosteo has E2E Encryption, for entire or parts of the app.
5. Dark ModePosteo supports dark mode for comfortable usage in low light conditions.
6. Ad-freePosteo doesn't contain any form of external advertising.
7. Email OrganizerPosteo allows you to take control of your inbox by filtering and control tools.
8. Spam FilterPosteo can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
9. Two-factor AuthenticationPosteo supports two-factor authentication (2FA).
Encrypted mail and contacts
Security focused
Transparency
Encrypted Email
Built-in Calendar
IMAP Support
Top 3 alternatives
Mailbox.org
Paid • Open Source
WebMail Provider
Email Client
Calendar App
Online
70 alternatives to Mailbox.org
Mailbox.org offers a secure e-mail account for home and business use. The domain name, me@mailbox.org, is easy to remember and can be understood anywhere in the world. They have been operating e-mail accounts for more than 20 years and are a highly reliable service provider.
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Mailbox.org Features
1. Privacy focusedMailbox.org is considered a privacy friendly alternative.
2. PGP EncryptionMailbox.org supports PGP, an encryption system used for sending encrypted emails and files.
3. No TrackingMailbox.org will not track you or use your personal data.
4. Calendar IntegrationMailbox.org lets you sync your tasks and events with your calendar application.
5. Automatic BackupMailbox.org will automatically back up your data periodically.
6. Two-factor AuthenticationMailbox.org supports two-factor authentication (2FA).
7. Spam FilterMailbox.org can detect unsolicited, unwanted and virus-infected emails, calls, files, etc.
8. Real time collaborationMultiple users can work together in Mailbox.org simultaneously.
9. Support for AliasesMailbox.org supports aliases, so you can receive email without exposing your main email address
Custom Domain
Encrypted Email
Built-in Calendar
IMAP Support
File Storage
Contacts
CalDAV Support
CardDAV Support
Support for SFTP
Supports XMPP
Top 3 alternatives
Apple Mail
Free • Proprietary
Email Client
Mac
iPhone
iPad
80 alternatives to Apple Mail
There’s big news attached. The best way to manage email on a Mac, according to Apple.
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Apple Mail Features
1. Email OrganizerApple Mail allows you to take control of your inbox by filtering and control tools.
Bundled with macOS
CalDAV Support
CardDAV Support
Exchange
Rich text editing
Encrypted Email
Customizable
Top 3 alternatives
Mailfence
Freemium • Proprietary
WebMail Provider
Email Client
Calendar App
Online
Android
iPhone
Android Tablet
iPad
61 alternatives to Mailfence
Mailfence is a secure and private email service that fights for online privacy and digital freedom.
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Mailfence Features
1. Calendar IntegrationMailfence lets you sync your tasks and events with your calendar application.
2. Privacy focusedMailfence is considered a privacy friendly alternative.
3. Ad-freeMailfence doesn't contain any form of external advertising.
4. Mail FilteringMailfence classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
5. PGP EncryptionMailfence supports PGP, an encryption system used for sending encrypted emails and files.
6. OpenPGPMailfence supports OpenPGP, a standard of PGP encryption that is open-source for public use.
7. AES-256 EncryptionMailfence has AES-256 Encryption, i.e. very strong security.
8. End-to-End EncryptionMailfence has E2E Encryption, for entire or parts of the app.
9. No TrackingMailfence will not track you or use your personal data.
IMAP Support
POP3 Support
Encrypted Email
Digital Signage
Integrated Spam Protection
Team Messaging
Private key storage
SMTP Support
Safely Transferred Data
Web-Based
Top 3 alternatives
Vivaldi Webmail
Free • Proprietary
WebMail Provider
Email Client
Calendar App
Online
90 alternatives to Vivaldi Webmail
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 5GB of storage capacity, 20 MB of maximum attachment size...
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Vivaldi Webmail Features
1. Ad-freeVivaldi Webmail doesn't contain any form of external advertising.
2. PGP EncryptionVivaldi Webmail supports PGP, an encryption system used for sending encrypted emails and files.
3. Mail FilteringVivaldi Webmail classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
IMAP Support
POP3 Support
Encrypted Email
Web-Based
Top 3 alternatives
Rainloop
Free • Open Source
Email Client
Online
Self-Hosted
Nextcloud
JavaScript
PHP
Cloudron
12 alternatives to Rainloop
Simple, modern & fast web-based email client. Modest system requirements, decent performance, simple installation and upgrade, no database required. All these make RainLoop Webmail a perfect choice for your email solution.
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Rainloop Features
1. Ad-freeRainloop doesn't contain any form of external advertising.
2. Multiple Account supportRainloop support multiple accounts without the need to logout and login
IMAP Support
Dockerized
Encrypted Email
Top 3 alternatives
Spike
Freemium • Proprietary
Email Client
Group Chat App
Team Collaboration Tool
Mac
Windows
Online
Android
iPhone
Chrome OS
Android Tablet
iPad
Software as a Service (SaaS)
Oculus Rift
62 alternatives to Spike
Bring your workspace together into one unified app. It’s everything your team has been looking for in a productivity and messaging app, but easier, and all with your email. Welcome to the shortest path to done.
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Spike Features
1. Unified inboxView e-mails (or similar) from all accounts in one unified view with Spike.
2. Dark ModeSpike supports dark mode for comfortable usage in low light conditions.
3. Email OrganizerSpike allows you to take control of your inbox by filtering and control tools.
4. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
5. Multiple Account supportSpike support multiple accounts without the need to logout and login
6. RemindersSpike allows you to set reminders for tasks, events or actions, based on parameters of time, place or condition.
7. Real time collaborationMultiple users can work together in Spike simultaneously.
8. Live PreviewInstantly see what your files and documents look like as you create them.
Built-in File Manager
Send later
Read confirmation
Snooze reliability
Web-Based
Tagging
Undo send
Priority Inbox
Threaded Conversations
Bulk actions
Top 3 alternatives
Mailvelope
Free • Open Source
Mac
Windows
Linux
Chrome OS
Microsoft Edge
Google Chrome
Firefox
28 alternatives to Mailvelope
Mailvelope is a browser extension that allows to exchange encrypted emails following the OpenPGP encryption standard.
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Mailvelope Features
1. PGP EncryptionMailvelope supports PGP, an encryption system used for sending encrypted emails and files.
2. GPG EncryptionMailvelope supports GPG (aka GnuPG) for encryption of things like emails, messages, files, etc.
3. OpenPGPMailvelope supports OpenPGP, a standard of PGP encryption that is open-source for public use.
Encrypted Email
Browser extension
Top 3 alternatives

Proton Mail Features

Top 3 alternatives

Tutanota Features

Top 3 alternatives

Disroot Features

Top 3 alternatives

Evolution Features

Top 3 alternatives

GnuPG Features

Top 3 alternatives

Delta Chat Features

Top 3 alternatives

eM Client Features

Top 3 alternatives

Posteo Features

Top 3 alternatives

Mailbox.org Features

Top 3 alternatives

Apple Mail Features

Top 3 alternatives

Mailfence Features

Top 3 alternatives

Vivaldi Webmail Features

Top 3 alternatives

Rainloop Features

Top 3 alternatives

Spike Features

Top 3 alternatives

Mailvelope Features

Top 3 alternatives