Binary package “libgmime-2.6-doc” in ubuntu bionic

MIME message parser and creator library (old 2.6 version) - documentation

 GMime provides a core library and set of utilities which may be used for the
 creation and parsing of messages using the Multipurpose Internet Mail
 Extension (MIME).
 .
 This package contains the documentation and examples of the older
 version GMime.
 .
 It is recommended to use libgmime-3.0-doc instead of this package.