Take it easy, good guys!!! I 110% use mutt to send message and message + attach.
But, a few time, I open the big heavy Libreoffice to compose some things only to send to someone. So, why I need to save it in my hard disk end, in a next step, send it by cmd with mutt? In my Libreoffice Tools, I have a tab properties setted to: Tools -> Properties -> Internet -> E-mail -> E-mail Program: sensible-lomua I setted it to: sensible-lomua %u but it not solve. In my Debian system, I only could select what program I use to send e-mails. Isn't possible to parse arguments, like %u. Finally, I think that my problem is more related to Libreoffice forum or Debian Libreoffice maintainers. Thank you very much! -- Marcelo