Several configuration parameters of the mailcow UI can be changed by creating a file data/web/inc/ which overrides defaults settings found in data/web/inc/

The local configuration file is persistent over updates of mailcow. Try not to change values inside data/web/inc/, but use them as template for the local override.

mailcow UI configuration parameters can be to...

  • ...change the default language1
  • ...change the default bootstrap theme
  • ...set a password complexity regex
  • ...enable DKIM private key visibility
  • ...add mailcow app buttons to the login screen
  • ...set a pagination trigger
  • ...set action after submitting forms (stay in form, return to previous page)

  1. To change SOGos default language, you will need to edit data/conf/sogo/sogo.conf and replace "English" by your preferred language.