Horde_Mime_Headers_Extension_Mime in Mime This interface indicates the header is MIME based (RFC 2045 et al.) rather than transport (i.e. RFC 5322) based. Tags author Michael Slusarz slusarz@horde.org category Horde copyright 2015-2017 Horde LLC license http://www.horde.org/licenses/lgpl21 LGPL 2.1 since 2.8.0