The default path should not be `path/to/imapnotify.conf` as that is obviously just a path for documentation and readme. A good default is probably `$XDG_CONFIG_HOME/imapnotify/imapnotify.conf` while `$XDG_CONFIG_HOME` should of course default to `$HOME/.config/`, as per [XDG Base Directory specification](https://wiki.archlinux.org/title/XDG_Base_Directory).