Isotope Mail Client AlternativesWebMail Providers & Email Clients like Isotope Mail Client

Isotope Mail Client is described as 'Microservice based webmail client built with ReactJS and Spring' and is a webmail provider in the office & productivity category. There are more than 10 alternatives to Isotope Mail Client for a variety of platforms, including Self-Hosted, Web-based, PHP, Cloudron and Linux apps. The best Isotope Mail Client alternative is Roundcube, which is both free and Open Source. Other great apps like Isotope Mail Client are Mailpile, Rainloop, SnappyMail and SOGo.

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Isotope Mail Client alternatives are mainly WebMail Providers but may also be Email Clients. Filter by these or use the filter bar below if you want a narrower list of alternatives or looking for a specific functionality of Isotope Mail Client.

Isotope Mail Client

WebMail Provider
Free • Open Source

Microservice based webmail client built with ReactJS and Spring.

Minimalistic webmail client which currently has the main features of any other mail client (read mail, compose mail, organize mail folders...).

More about Isotope Mail Client

Isotope Mail Client alternatives page was last updated Jul 23, 2024

Roundcube
Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.
27 Roundcube alternatives
License model
- Free • Open Source
Application types
- WebMail Provider
- Email Client
Platforms
- Self-Hosted
- PHP
- Cloudron
Roundcube Features
WYSIWYG Support
PGP Encryption
IMAP Support
Hostable
Show all NaN Roundcube features ▾
+9
Roundcube VS Isotope Mail Client
Is Roundcube a good alternative to Isotope Mail Client?
- Roundcube is the most popular Self-Hosted alternative to Isotope Mail Client.
- Roundcube is the most popular Open Source & free alternative to Isotope Mail Client.
- Roundcube is Free and Open SourceIsotope Mail Client is also Free and Open Source

Mailpile
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.
59 Mailpile alternatives
License model
- Free • Open Source
Application types
- Email Client
- WebMail Provider
Platforms
- Linux
- Online
- Self-Hosted
- OpenPGP
Mailpile Features
1. OpenPGP
2. Web-Based
3. Encrypted Email
4. IMAP Support
5. POP3 Support
Show all NaN Mailpile features ▾
Mailpile VS Isotope Mail Client
Is Mailpile a good alternative to Isotope Mail Client?
- Mailpile is the most popular Web-based & Linux alternative to Isotope Mail Client.
- Mailpile is Free and Open SourceIsotope Mail Client is also Free and Open Source

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.
12 Rainloop alternatives
License model
- Free • Open Source
Application type
- Email Client
Platforms
- Online
- Self-Hosted
- Nextcloud
- JavaScript
- PHP
- Cloudron
Rainloop Features
1. Ad-free
2. Multiple Account support
3. IMAP Support
4. Dockerized
5. Encrypted Email
Show all NaN Rainloop features ▾
Discontinued
The last update is from August 2022.

Rainloop VS Isotope Mail Client
Is Rainloop a good alternative to Isotope Mail Client?

SnappyMail
The drastically upgraded & secured fork of RainLoop Webmail Community edition.
12 SnappyMail alternatives
License model
- Free • Open Source
Application type
- Email Client
Platforms
- Self-Hosted
- Web Browser
Top SnappyMail Features
1. Lightweight
2. Dark Mode
3. PGP Encryption
4. WYSIWYG Support
5. Privacy focused
6. Extensible by Plugins/Extensions
7. Ad-free
8. Multiple Account support
9. Support for Themes
10. No Tracking
11. Two-factor Authentication
12. GPG Encryption
Show all NaN SnappyMail features ▾
SnappyMail VS Isotope Mail Client
Is SnappyMail a good alternative to Isotope Mail Client?

SOGo
SOGo is groupware server with a focus on scalability and open standards.

SOGo provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols such as CalDAV, CardDAV and GroupDAV.Share your calendars, address books and mails in.
63 SOGo alternatives
License model
- Freemium • Open Source
Application type
- WebMail Provider
Platforms
- Linux
- Online
- Thunderbird
- Cloudron
SOGo Features
Support for Multiple Users
Scheduling
CalDAV Support
CardDAV Support
Show all NaN SOGo features ▾
SOGo VS Isotope Mail Client
Is SOGo a good alternative to Isotope Mail Client?

Horde
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.
43 Horde alternatives
License model
- Free • Open Source
Application type
- WebMail Provider
Platforms
- Online
- Self-Hosted
Horde Features
CalDAV Support
Show all NaN Horde features ▾
Discontinued
The last release (5.2.22) was in September 2017.

Horde VS Isotope Mail Client
Is Horde a good alternative to Isotope Mail Client?

Squirrelmail
SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers.
17 Squirrelmail alternatives
License model
- Free • Open Source
Application type
- WebMail Provider
Platforms
- Self-Hosted
- PHP
Squirrelmail Features
SMTP Support
IMAP Support
Exchange
On-premises software
Show all NaN Squirrelmail features ▾
Squirrelmail VS Isotope Mail Client
Is Squirrelmail a good alternative to Isotope Mail Client?

Webmail Lite
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.
30 Webmail Lite alternatives
License model
- Free • Open Source
Application type
- WebMail Provider
Platforms
- Online
- Self-Hosted
+2
Webmail Lite VS Isotope Mail Client
Is Webmail Lite a good alternative to Isotope Mail Client?

NeutronMail
Self-hosted server for the Proton Mail client.
25 NeutronMail alternatives
License model
- Free • Open Source
Application type
- WebMail Provider
Platforms
- Online
- Self-Hosted
NeutronMail Features
End-to-End Encryption
PGP Encryption
Web-Based
Show all NaN NeutronMail features ▾
Discontinued
No longer supported

NeutronMail VS Isotope Mail Client
Is NeutronMail a good alternative to Isotope Mail Client?

Cypht
All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader :).
11 Cypht alternatives
License model
- Free • Open Source
Application type
- Email Client
Platforms
- Self-Hosted
Cypht Features
1. End-to-End Encryption
2. JMAP
3. IMAP Support
4. Built-in RSS reader
5. POP3 Support
6. Modules
7. SMTP Support
Show all NaN Cypht features ▾
Cypht VS Isotope Mail Client
Is Cypht a good alternative to Isotope Mail Client?

Safe-mail.net
High security web-based e-mail system which extends considerably the email system to much more than currently exists.
45 Safe-mail.net alternatives
License model
- Freemium • Proprietary
Application type
- WebMail Provider
Platforms
- Online
Safe-mail.net Features
1. Mail Filtering
2. Spam Filter
3. POP3 Support
4. SMTP Support
5. IMAP Support
Show all NaN Safe-mail.net features ▾
Safe-mail.net VS Isotope Mail Client
Is Safe-mail.net a good alternative to Isotope Mail Client?