Looking for logging into the Roundcube Plugin site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Roundcube Plugin site. After that you can login as usual with your login credentials.
https://plugins.roundcube.net/
https://www.wulsch.de/wp/2018/09/16/wordpress-plugin-roundcube-login-form/
https://www.cyon.ch/blog/Roundcube-installieren-Webmail-selbstgemacht
https://github.com/roundcube/roundcubemail/wiki/Plugin-API
https://github.com/roundcube/roundcubemail/wiki/Plugin-Hooks
https://github.com/valarauco/roundcube-plugin-admin-options
https://de.wikipedia.org/wiki/Roundcube
https://packages.debian.org/de/sid/roundcube-plugins-extra
https://www.digitalocean.com/community/tutorials/how-to-install-your-own-webmail-client-with-roundcube-on-ubuntu-16-04
https://support.plesk.com/hc/en-us/articles/360003436033-Unable-to-log-in-to-Roundcube-after-an-upgrade-to-Plesk-Onyx-17-8-Failed-to-load-plugin-file-sieverules-php
https://serverfault.com/questions/591989/roundcube-webmail-plugins-configuration
https://forum.netcup.de/anwendung/wcp-webhosting-control-panel/10178-sieve-plugin-f%C3%BCr-roundcube-webmail/
https://kb.spamexperts.com/29941-integration/227823-roundcube-integration