Question

what are mail headers? explain all types of mail headers.​

Answer 1

Answer:

An email header is the area in which you enter important information above the email content area. The information in the header includes such things as the recipient, the sender, and a subject line with the option of sending copies to additional recipients.

Explanation:

Some headers are mandatory, such as the FROM, TO and DATE headers. Others are optional, but very commonly used, such as SUBJECT and CC. Other headers include the sending time stamps and the receiving time stamps of all mail transfer agents that have received and sent the message.