mailodf man page
mailodf — Email ODF file as HTML archive
mailodf [-f from] [-s subject] inputfile recipients...
mailodf is a program that will create a MIME-encapsulated web archive and then sends it as an email. Most email programs that understand HTML understands this format.
“Inputfile” is assumed to be an OpenDocument file of text, spreadsheet or presentation type.
mailodf -f email@example.com -s "F.Y.I" odf-file