How do you encode a quoted-printable?

How do you encode a quoted-printable?

The format of a quoted-printable message is simple. The encoder converts any character that must be escaped to an equal sign (=) followed by the character’s ASCII value in hexadecimal. For example, a VT character (ASCII value 11) is represented as =0B and a DEL character (ASCII value 127) is represented as =7F.

What is content transfer encoding quoted-printable?

Quoted-Printable, or QP encoding, is a binary-to-text encoding system using printable ASCII characters (alphanumeric and the equals sign = ) to transmit 8-bit data over a 7-bit data path or, generally, over a medium which is not 8-bit clean. It is defined as a MIME content transfer encoding for use in e-mail.

What is content transfer encoding?

Content transfer encoding defines encoding methods for transforming binary email message data into the US-ASCII plain text format. This transformation allows the message to travel through older SMTP messaging servers that only support messages in US-ASCII text. Content transfer encoding is defined in RFC 2045.

What is 3D in HTML?

It is just an email encoding system called quoted-printable. This allows non-ASCII characters to be represented as ASCII for email transportation. In quoted-printable, any non-standard email octets are represented as an = sign. So, 3D are the hex digits corresponding to =’s ASCII value (61).

What are the five different headers specified in mime?

The following headers are defined in MIME:

• MIME-Version.
• Content-Type.
• Content-Transfer-Encoding.
• Content-ID.
• Content-Description.
• Content-Disposition.

Is Transfer-Encoding mandatory?

This clearly indicates that it is not required to be sent. With Transfer-Encoding the standard states: The Transfer-Encoding general-header field indicates what (if any) type of transformation has been applied to the message body in order to safely transfer it between the sender and the recipient.

What is 7-bit ASCII code?

ASCII is a 7-bit code, representing 128 different characters. When an ascii character is stored in a byte the most significant bit is always zero. Sometimes the extra bit is used to indicate that the byte is not an ASCII character, but is a graphics symbol, however this is not defined by ASCII.

What is 3D in email?

(“3D” is the hexadecimal representation of the equals sign.) If you believe this is the problem with your HTML, try putting an equals sign anywhere in the rest of the HTML code to make sure that the email is being properly decoded (put in something like “2 + 2 = 4”).