Sending files that are in a mirror column

I have a board with clients/users and another board with files. I would like to send files to clients depending in their needs. As i have two boards, one with files and the other with users, when i try to send an email from users board i am not able to see the files.

  1. I have tried connecting the boards and morroring the file, but in that case in the email the file is not recognized.
  2. I have tried saving the files in email templates, but email templates do not save files.
    Has someone got a solution, workaround.
    The only way I see is storing in dropbox and saving links in the templates but would like to do it directly through monday to ensure that the link belongs to the monday file.
    Thank you