my cache resides in RAM
do not auto encrypt
the comment on the first line helps vim's file detection
some settings need to be done on account level

pgp_sign, pgp_encrypt_only_command, pgp_encrypt_sign_command
mime-settings file is obsolete
added crypto-settings file
resemble my real world setup (with 2 accounts instead of 5)
since 'q' quits the pager as well as mutt prevent quitting mutt unintended
fixed character encoding in lynx
fixed libreoffice mailcap entries