Is there any errors either in the Roundcube log <RC directory>/logs/errors or in the browsers JS console?

Hey
I've been using Roundcube to send high-res photos of my 50p and £2 pieces to some fellow collectors for valuation. Usually it works fine but I've noticed a weird lag lately where the thumbnails don't generate or the upload just hangs halfway. My storage quota says I have space left but the behavior says otherwise especially with these larger image files. I've tried resizing them and clearing my cache without much success. I'm definitely not a server expert so maybe I missed a simple setting in the interface. Any of you had similar issues when dealing with lots of attachments?

Just gotta say, Roundcube on Debian Trixie is excellent. It's functional, fast, and honestly even smoother and easier than some desktop mail clients for certain workflows. You guys have done an amazing job keeping it so solid. Huge congratulations to the whole team – and really hope this beauty gets maintained for a long, long time.

I have just turned on API button in Mailvelop and Roundcube on Debian recognized it.

Thanks for the addition! I'll add it to my next 1.7 install.

Quote from: SKaero on March 27, 2026, 01:02:57 AMa way to switch to light / default mode in case there is a message that needs to be view in the original form.

I have added a button to the message viewer toolbar, that can toggle to and from light mode. It is only there when the RCM application is in dark mode.

Use the "ROUNDCUBEMAIL_COMPOSER_PLUGINS" environment variable as described here https://github.com/roundcube/roundcubemail-docker/blob/master/README.md

Hi everyone,
i've set up roundcubemail using a Docker Composer file.

  roundcubemail:
    container_name: roundcubemail
    image: roundcube/roundcubemail:nightly
    restart: unless-stopped
    ports:
    - '8084:80'
    environment:
      # Database Variables
      ROUNDCUBEMAIL_DB_TYPE: 'pgsql'
      ROUNDCUBEMAIL_DB_HOST: '192.168.20.60'
      ROUNDCUBEMAIL_DB_NAME: 'roundcubemaildb'
      ROUNDCUBEMAIL_DB_USER: 'roundcubemaildbuser'
      ROUNDCUBEMAIL_DB_PASSWORD: '###################'
      # Mail Variables
      ROUNDCUBEMAIL_DEFAULT_HOST: 'ssl://dsme01.intern.example.com'
      ROUNDCUBEMAIL_DEFAULT_PORT: '993'
      ROUNDCUBEMAIL_SMTP_SERVER: 'ssl://dsme01.intern.example.com'
      ROUNDCUBEMAIL_SMTP_PORT: '465'
      ROUNDCUBEMAIL_USERNAME_DOMAIN: 'example.com'
      ROUNDCUBEMAIL_PLUGINS: 'debug_logger,new_user_identity,password'
      ROUNDCUBEMAIL_INSTALL_PLUGINS: 'true'
      ROUNDCUBEMAIL_SKIN: 'elastic'
    volumes:
      - /var/lib/docker/volumes/roundcubemail/_data:/var/www/html/config
      - /etc/ssl/certs:/etc/ssl/certs
Afterwards, I installed four plugins, including their dependencies, on the container's console.

- roundcube/carddav
- kolab/libkolab
- kolab/libcalendaring
- kolab/calendar
Now I'm having a problem: when I rebuild, the four plugins I installed via the console aren't being built. How can I add them to my Docker Composer file?

So that all plugins are automatically installed when rebuilding?

Regards, Stefan Harbich

Hi,

thanks for looking into this and the hint that the Larry skin is not supported anymore.

Accordingly I tried using Elastic and got pretty much the same errors plus an Elastic related one.

PHP Warning:  Undefined array key "elastic" in /usr/share/roundcube/plugins/jquery_mobile/jquery_mobile.php on line 44
PHP Fatal error:  Uncaught Error: Call to undefined method rcmail_output_json::asset_url() in /usr/share/roundcube/program/actions/mail/index.php:733
Stack trace:
#0 /usr/share/roundcube/program/actions/mail/index.php(644): rcmail_action_mail_index::options_menu_link()
#1 /usr/share/roundcube/program/actions/mail/index.php(478): rcmail_action_mail_index::message_list_head()
#2 /usr/share/roundcube/program/actions/mail/list.php(125): rcmail_action_mail_index::js_message_list()
#3 /usr/share/roundcube/program/include/rcmail.php(282): rcmail_action_mail_list->run()
#4 /usr/share/roundcube/index.php(278): rcmail->action_handler()
#5 {main}
  thrown in /usr/share/roundcube/program/actions/mail/index.php on line 733
PHP Warning:  Undefined array key "elastic" in /usr/share/roundcube/plugins/jquery_mobile/jquery_mobile.php on line 44

they have fixed it https://phpc.social/@packagist/116334279107558992