MIME – Multipurpose Internet Mail Extensions
July 2, 2012
Presentation layer
Internet standard MIME is able to extend the e-mail format for the purpose to support the following things as text, non-text attachment, a message organization with manifold parts and non-ASCII header information. The existence of MIME protocol has become very important because SMTP as basic e-mail transmission protocol can support only 7-bit of ASCII characters set. But MIME as Presentation layer protocol can hold up 8-bit binary content by describing the ways of sending certain types of data via an electronic mail.