roundcube-plugins-extra binary package in Ubuntu Focal amd64

 RoundCube Webmail is a browser-based multilingual IMAP client with an
 application-like user interface. It provides full functionality
 expected from an e-mail client, including MIME support, address book,
 folder manipulation and message filters.
 .
 The user interface is fully skinnable using XHTML and CSS 2.
 .
 This package provides a collection of several plugins for Roundcube that
 are not maintained directly by Roundcube authors, namely:
  - compose-addressbook
  - contextmenu
  - dkimstatus
  - dovecot-impersonate
  - fail2ban
  - keyboard-shortcuts
  - listcommands
  - markasjunk2
  - message-highlight
  - sauserprefs
  - sieverules
  - thunderbird-labels
 .
 They should be enabled in the configuration of Roundcube.

Source package