The proof is in the pudding. INSKEEP: The proof is in the pudding, he said. Tim Lowe wrote us all the way from Santiago de Cali, Colombia, and he writes the following: Frank, the proof is not in the pudding. It would be a messy, if not completely silly place to keep it.
Every email message consists of two parts, the body and the header. The header can be thought of as the envelope of the message, containing the address of the sender, the recipient, the subject and other information. The body contains the actual text and the attachments.
A single email header has some important characteristics, including perhaps the most important part of an email-this is the KEY:VALUE pairs contained in the header. Looking at the above, you can tell some of the KEY:VALUE pairs used.