The reason mimencode relies on libmetamail is because it was merged with the net-mail or metamail package. Either build a static version using -static build flags, or create a static version using
statifier, or find a standalone version of
mmencode, or use
mpack, or use 'mutt -a file0 -a file1 -s subject
ad@dre.ss < /dev/null' or else resort to something like 'openssl base64 -e < INFILE > OUTFILE'?