Kolab Now Alternatives

Kolab Now is described as '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' and is a Calendar app in the office & productivity category. There are more than 50 alternatives to Kolab Now for a variety of platforms, including Online / Web-based, Android, iPhone, Linux and iPad. The best alternative is Proton Mail, which is both free and Open Source. Other great apps like Kolab Now are Tutanota, Posteo, Zoho Mail and Mailbox.org.

Kolab Now alternatives are mainly WebMail Providers but may also be Email Clients or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Kolab Now.

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Kolab Now

Paid • Open Source
Calendar App

Online
Software as a Service (SaaS)
DAVdroid

Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier,...

Learn more about Kolab Now

Mailfence
Sponsored
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.
Suggest and vote on features
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
Proton Mail
Do you think this is a good alternative?
Yes
No
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.
Suggest and vote on features
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
Tutanota
Do you think this is a good alternative?
Yes
No
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.
Suggest and vote on features
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
Calendar View
Encrypted Connection
Sync Contacts
Support for Aliases
Posteo
Do you think this is a good alternative?
Yes
No
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.
Suggest and vote on features
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
Encrypted Email
Security focused
Transparency
Built-in Calendar
IMAP Support
Calendar View
Mail Filtering
Support for Aliases
No Tracking
Zoho Mail
Do you think this is a good alternative?
Yes
No
Freemium • Proprietary
WebMail Provider
Email Client
Mac
Windows
Linux
Online
Android
iPhone
97 alternatives to Zoho Mail
Zoho Mail is an integrated email suite for modern enterprises, complete with Calendar, Notes, Tasks, Contacts, and Bookmarks. With over 15 million satisfied users and a decade of experience as a business email provider, we’re equipped to sail through any challenge unique to an...
Suggest and vote on features
Zoho Mail Features
1. Ad-freeZoho Mail doesn't contain any form of external advertising.
2. Privacy focusedZoho Mail is considered a privacy friendly alternative.
3. Mail FilteringZoho Mail classifies email messages according to specified criteria, allowing you to automatically recognize fraudulent or spam messages.
4. Two-factor AuthenticationZoho Mail supports two-factor authentication (2FA).
5. Support for AliasesZoho Mail supports aliases, so you can receive email without exposing your main email address
Custom Domain
Virtual office
Document sharing
SMTP Support
POP3 Support
Integrated Spam Protection
Mailbox.org
Do you think this is a good alternative?
Yes
No
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.
Suggest and vote on features
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
Cloud Sync
Google Workspace
Do you think this is a good alternative?
Yes
No
Paid • Proprietary
Mail Server
Team Collaboration Tool
Calendar App
Mac
Windows
Linux
Online
Chrome OS
49 alternatives to Google Workspace
Google Workspace (formerly Google Apps for Work / G Suite) is Google's encompassing selection of cloud apps for business, including customizable products under custom domain names. It features traditional office tools through Google Docs as well as communication and time...
Suggest and vote on features
Google Workspace Features
1. Sync with Google CalendarGoogle Workspace can be synchronized with Google Calendar
2. Two-factor AuthenticationGoogle Workspace supports two-factor authentication (2FA).
Online collaboration
Google contacts integration
Sync with Google Drive
Google Sheets integration
Integrated Bulk Emailing
Mailfence
Do you think this is a good alternative?
Yes
No
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.
Suggest and vote on features
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
Fastmail
Do you think this is a good alternative?
Yes
No
Paid • Proprietary
WebMail Provider
Calendar App
Mail Server
Online
Android
iPhone
Android Tablet
iPad
61 alternatives to Fastmail
Fastmail provides one of the most secure and reliable email environments in the industry. Rock Solid Reliability. More safety.
Suggest and vote on features
Fastmail Features
1. Support for AliasesFastmail supports aliases, so you can receive email without exposing your main email address
2. Ad-freeFastmail doesn't contain any form of external advertising.
Integrated Spam Protection
File Storage
Privacy
SMTP Support
JMAP
GDPR Compliant
CalDAV Support
IMAP Support
Sieve filtering
Built-in Calendar
Yandex Mail
Do you think this is a good alternative?
Yes
No
Freemium • Proprietary
WebMail Provider
Email Client
Online
Android
iPhone
Android Wear
Android Tablet
iPad
88 alternatives to Yandex Mail
Yandex Mail is a reliable email solution for work and personal correspondences with a built-in translator.
Suggest and vote on features
Yandex Mail Features
1. Dark ModeYandex Mail supports dark mode for comfortable usage in low light conditions.
2. Unlimited storageYandex Mail offers a solution with unlimited cloud storage.
Built-in themes
Push Notifications
IMAP Support
POP3 Support
Custom Domain