An Internet standard that extends the format of email to support:
Text in character sets other than ASCII
Message bodies with multiple parts
Header information in non-ASCII character sets
Although MIME was designed mainly for SMTP protocol, its use today has grown beyond describing the content of email and now often includes descriptions of content type in general, including for the web (see Internet media type) and as a storage for rich content in some commercial products. Virtually all human-written Internet email and a large proportion of automated email are transmitted via SMTP in MIME format. Internet email is so closely associated with the SMTP and MIME standards that it is sometimes called SMTP/MIME email.