Enigmail AlternativesOnly apps categorised as Calendar Apps

The best Calendar alternative to Enigmail is Tuta Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Enigmail and four of them are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to Enigmail are Mailbox.org, Vivaldi Mail and Kolab Now.

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Enigmail alternatives are mainly WebMail Providers but may also be Email Clients or Calendar Apps.  Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Enigmail.
Enigmail iconEnigmail
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Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the .

More about Enigmail
Enigmail alternatives page was last updated Jun 21, 2024
  1. Tuta Mail icon
     465 likes

    Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.

    94 Tuta Mail alternatives
    Mail View

    License model

    • FreemiumOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Self-Hosted
    • Flathub
    • F-Droid

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Encrypted Email
    2.  End-to-End Encryption
    3.  Dark Mode
    4.  Custom Domain
    5.  Encrypted calendar
    6.  Contacts
    7.  Integrated File Sharing
    8.  No Tracking
    9.  Multiple Account support
    10.  Email Organizer
    11.  Spam Filter
    12.  Ad-free
    Tuta Mail iconEnigmail Icon

    Tuta Mail VS Enigmail

    Is Tuta Mail a good alternative to Enigmail?
     
    • Tuta Mail is the most popular Web-based, Windows, Android & Mac alternative to Enigmail.

    • Tuta Mail is the most popular Open Source & free alternative to Enigmail.

    • Tuta Mail is Freemium and Open SourceEnigmail is Free and Open Source
    • Tuta Mail is Privacy focused and LightweightEnigmail is not according to our users
  2. Mailbox.org icon
     60 likes

    E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).

    78 Mailbox.org alternatives
    Dashboard online office. Powered by Open-Xchange

    License model

    Platforms

    • Online

    Properties

    1.  Privacy focused

    Features

    1.  Custom Domain
    2.  Encrypted Email
    3.  PGP Encryption
    4.  No Tracking
    5.  Calendar Integration
    6.  Spam Filter
    7.  Two-factor Authentication
    8.  Automatic Backup
    9.  Real time collaboration
    10.  Support for Aliases
    11.  Cloud Sync
    12.  Self Destructing Messages
    Mailbox.org iconEnigmail Icon

    Mailbox.org VS Enigmail

    Is Mailbox.org a good alternative to Enigmail?
     
    • Mailbox.org is the most popular commercial alternative to Enigmail.

    • Mailbox.org is Paid and ProprietaryEnigmail is Free and Open Source
    • Mailbox.org is Privacy focusedEnigmail is not according to our users
  3. Vivaldi Mail icon
     32 likes

    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, 10GB of storage capacity, 20 MB of maximum attachment size...

    95 Vivaldi Mail alternatives
    Mail

    License model

    • FreeProprietary

    Platforms

    • Online
    • Vivaldi

    Vivaldi Mail Features

    1.  Ad-free
    2.  PGP Encryption
    3.  Mail Filtering
    4.  Dark Mode
    5.  Calendar Integration
    6.  IMAP Support
    7.  POP3 Support
    8.  Encrypted Email
    9.  Web-Based
    Vivaldi Mail iconEnigmail Icon

    Vivaldi Mail VS Enigmail

    Is Vivaldi Mail a good alternative to Enigmail?
     
  4. Kolab Now icon
     42 likes

    Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.

    79 Kolab Now alternatives
    Kolab Now email

    License model

    Platforms

    • Online
    • Software as a Service (SaaS)
    • DAVx5

    Properties

    1.  Privacy focused

    Features

    1.  Support for Aliases
    2.  Real time collaboration
    3.  End-to-End Encryption
    4.  CalDAV Support
    5.  WebDAV Sync
    6.  CardDAV Support
    Kolab Now iconEnigmail Icon

    Kolab Now VS Enigmail

    Is Kolab Now a good alternative to Enigmail?
     
    • Kolab Now is the most popular SaaS alternative to Enigmail.

    • Kolab Now is Paid and Open SourceEnigmail is Free and Open Source
    • Kolab Now is Privacy focusedEnigmail is not according to our users
4 of 4 Enigmail alternatives