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

Roundcube Webmail

Roundcube Webmail 1.6.5

  -  5.7 MB  -  Open Source

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 1.6.5.


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.


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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!

  • Roundcube Webmail 1.6.5 Screenshots

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    Roundcube Webmail 1.6.5 Screenshot 1
  • Roundcube Webmail 1.6.5 Screenshot 2
  • Roundcube Webmail 1.6.5 Screenshot 3
  • Roundcube Webmail 1.6.5 Screenshot 4
  • Roundcube Webmail 1.6.5 Screenshot 5

What's new in this version:

Fixed:
- PHP8 fatal error when parsing a malformed BODYSTRUCTURE
- duplicated Inbox folder on IMAP servers that do not use Inbox folder with all capital letters
- PHP warnings
- UI issue when dealing with an invalid managesieve_default_headers value
- bug where images attached to application/smil messages weren't displayed
- PHP string replacement error in utils/error.php
- regression where smtp_user did not allow pre/post strings before/after %u placeholder
- cross-site scripting (XSS) vulnerability in setting Content-Type/Content-Disposition for attachment preview/download