Open Source Zoho Mail AlternativesWebMail Providers & Email Clients like Zoho Mail

The best open source alternative to Zoho Mail is Disroot. If that doesn't suit you, our users have ranked more than 50 alternatives to Zoho Mail and 18 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Zoho Mail are FairEmail, Posteo, Horde and Kolab Now.

Zoho Mail 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 Zoho Mail.

Zoho Mail

107

Freemium • Proprietary
WebMail Provider

Zoho Mail is an integrated email suite for modern enterprises, complete with Calendar, Notes, Tasks, Contacts, and...

More about Zoho Mail

Zoho Mail alternatives page was last updated

Disroot
Is this is a good alternative?
Yes
No
Free • Open Source
WebMail Provider
Online
F-Droid
27 Disroot alternatives
Disroot is a platform providing online services based on principles of freedom, privacy, federation and decentralization.
- - Disroot is the most popular Open Source alternative to Zoho Mail.
Suggest and vote on features
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
FairEmail
Is this is a good alternative?
Yes
No
Freemium • Open Source
Email Client
Android
Android Tablet
F-Droid
44 FairEmail alternatives
FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing.
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FairEmail Features
1. Privacy focusedFairEmail is considered a privacy friendly alternative.
2. Multiple Account supportFairEmail support multiple accounts without the need to logout and login
3. PGP EncryptionFairEmail supports PGP, an encryption system used for sending encrypted emails and files.
4. Works OfflineFairEmail can be used without the need to connect to the internet.
5. No TrackingFairEmail will not track you or use your personal data.
6. Ad-freeFairEmail doesn't contain any form of external advertising.
7. Unified inboxView e-mails (or similar) from all accounts in one unified view with FairEmail.
8. Dark ModeFairEmail supports dark mode for comfortable usage in low light conditions.
9. LightweightFairEmail consumes less device resources compared to similar apps.
Customizable
Email Notifications
Extensive settings menu
IMAP Support
Notifications
S/MIME Support
Block Trackers
Calendar Integration
Posteo
Is this is a good alternative?
Yes
No
Paid • Open Source
WebMail Provider
Email Client
Calendar App
Online
61 Posteo alternatives
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
Encrypted Email
Security focused
Transparency
Built-in Calendar
IMAP Support
Calendar View
Mail Filtering
Support for Aliases
No Tracking
Horde
Is this is a good alternative?
Yes
No
Free • Open Source
WebMail Provider
Online
Self-Hosted
40 Horde alternatives
Horde Groupware is a free, enterprise ready, browser based collaboration suite. Users can manage and share calendars, contacts, tasks and notes with the standards compliant components from the Horde Project.
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Horde Features
CalDAV Support
Discontinued
The last release (5.2.22) was in September 2017.
Kolab Now
Is this is a good alternative?
Yes
No
Paid • Open Source
Calendar App
Mail Server
Cloud Storage Service
Online
Software as a Service (SaaS)
DAVdroid
76 Kolab Now alternatives
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.
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Kolab Now Features
1. Support for AliasesKolab Now supports aliases, so you can receive email without exposing your main email address
2. Real time collaborationMultiple users can work together in Kolab Now simultaneously.
3. Privacy focusedKolab Now is considered a privacy friendly alternative.
4. End-to-End EncryptionKolab Now has E2E Encryption, for entire or parts of the app.
CalDAV Support
WebDAV Sync
CardDAV Support
Criptext
Is this is a good alternative?
Yes
No
Free Personal • Open Source
Email Client
Mac
Windows
Linux
Android
iPhone
22 Criptext alternatives
Finally, an email service that's built around your privacy. Get your @criptext.com email address and see what it's like to have peace of mind and privacy in every email you send.
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Criptext Features
1. Privacy focusedCriptext is considered a privacy friendly alternative.
2. Support for AliasesCriptext supports aliases, so you can receive email without exposing your main email address
Discontinued
Creator recently sent and email about going solo, but since then support has been unresponsive, as have nearly all new issues on github for a year now if not more...
sup
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Linux
52 sup alternatives
Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic contact- list management, custom code insertion via a hook system, and more.
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sup Features
1. Multiple Account supportsup support multiple accounts without the need to logout and login
2. Command line interfacesup either have CLI support or is a CLI-only app.
Console-based
IMAP Support
Swisscows.email
Is this is a good alternative?
Yes
No
Freemium • Open Source
WebMail Provider
Email Client
Online
53 Swisscows.email alternatives
Swisscows.email is another product of Swisscows AG. This product offers you secure email traffic. With Swisscows.email you can send your emails encrypted so that absolutely no one can read them. The service is comparable to a letter that is protected from prying eyes in an...
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Swisscows.email Features
1. Privacy focusedSwisscows.email is considered a privacy friendly alternative.
Encrypted Email
Webmail Lite
Is this is a good alternative?
Yes
No
Free • Open Source
WebMail Provider
Online
Self-Hosted
28 Webmail Lite alternatives
Open Source WebMail Lite is a free community edition of full-featured WebMail Pro server application intended for users who need a clean and simple web mail application, which is fast and easy to use. Whether you need a free web browser based email client software for Windows ASP.
Webmail Lite has no features, suggest some!
Librem Mail
Is this is a good alternative?
Yes
No
Paid • Open Source
Email Client
Android
Android Tablet
43 Librem Mail alternatives
End-to-end encrypted email used by nearly everybody already.
Suggest and vote on features
Librem Mail Features
1. End-to-End EncryptionLibrem Mail has E2E Encryption, for entire or parts of the app.
IMAP Support
POP3 Support