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Mime Types

WHAT IS IT?

  • MIME: Multipurpose Intternet Mail Extensions

  • MIME types tell browsers how to handle specific extensions.

  • We can alter or add new MIME types specifically for our site.

  • Note we can not alter the system defined MIME types values.

  • MIME types  are often used to handle new technologies as they appear.

  • ​

  • MIME has:

Content - Type

  • Describes the data contained in the body.

Mime Version

  • Must have the parameter value 1.0

Content - Transfer Encoding

Content - ID

  • Used to identify MIME entity uniquly in multiple context.

Content - Description

  • A text description of the object with the body; this is useful when the object is not readable.

  • In order to expand upon the limited capabilities of email, and in particular to allow document. (such as image, sound, and text) to be inserted in a message.

  • MIME is intended to resolve some of the problem and limitation of the use of SMTP.

  • Here are different between two types of E-mail Application program.

WHY MIME TYPES

SMTP

(Simple Mail Transfer Protocol)

MIME 

(Multipurpose Internet Mail Extension)

  • I can do all the jobs of SMTP and also jobs that SMTP can't do.

  • Very popular E-mail protocol.

  • Used to send textual data.

  • Delivers the messages to the specified destination and checks whether the messages are delivered successfully.

  • Because of grows a demand for Email message, it is not restricted to textual data because peope what to expess in terms of multimedia also.

  • So another e-mail application program has introduces.

  • Have own functionality.

  • Can not sent 8-bit code 7-bit ASCII.

  • Can not send executable files.

  • Binary attachments (executable, images, audio or video files) which may be divided if needed..

  • MIME provides support for varying content types and multi-part messages.

  • May reject message over a certain size.

  • Be able to send multimedia attachments with a single message.

  • Unlimited message length.

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