Package mailcap

Helper application and MIME type associations for file types

https://pagure.io/mailcap

The mailcap file is used by the metamail program. Metamail reads the
mailcap file to determine how it should display non-text or multimedia
material. Basically, mailcap associates a particular type of file
with a particular program that a mail agent or other program can call
in order to handle the file. Mailcap should be installed to allow
certain programs to be able to handle non-text files.

Also included in this package is the mime.types file which contains a
list of MIME types and their filename "extension" associations, used
by several applications e.g. to determine MIME types for filenames.

Special Files (Section 4)
mailcap
The mailcap file is read by the metamail program to determine how to display non-text at the local site. The syntax of a mailcap file is quite simple, at least...