Free and open source webmail software for the masses, written in PHP

Roundcube Webmail

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Roundcube Webmail 1.6.3

  -  5.7 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Roundcube Webmail 1.6.3.


For those interested in downloading the most recent release of Roundcube Webmail or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download Roundcube Webmail 1.6.3

  • Roundcube Webmail 1.6.3 Screenshots

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    Roundcube Webmail 1.6.3 Screenshot 1
  • Roundcube Webmail 1.6.3 Screenshot 2
  • Roundcube Webmail 1.6.3 Screenshot 3
  • Roundcube Webmail 1.6.3 Screenshot 4
  • Roundcube Webmail 1.6.3 Screenshot 5

What's new in this version:

Fixed:
- bug where installto.sh/update.sh scripts were removing some essential options from the config file
- Update jQuery-UI to version 1.13.2
- regression that broke use_secure_urls feature
- potential PHP fatal error when opening a message with message/rfc822 part
- bug where a duplicate <title> tag in HTML email could cause some parts being cut off
- bug where a list of folders could have been sorted incorrectly
- regression where LDAP addressbook 'filter' option was ignored
- wrong order of a multi-folder search result when sorting by size
- so install/update scripts do not require PEAR
- regression where some mail parts could have been decoded incorrectly, or not at all
- handling of an error case in Cyrus IMAP BINARY FETCH, fallback to non-binary FETCH
- PHP8 deprecation warning in the reconnect plugin
- "Show source" on mobile with x_frame_options = deny
- various PHP warnings
- deprecated use of ldap_connect() in password's ldap_simple driver
- cross-site scripting (XSS) vulnerability in handling of linkrefs in plain text messages

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