What is the purpose of a header?

Related questions

1. Can you archive emails in Outlook Web App?
2. What is a full email header?
3. What does email header contain?
4. What should be in a header?
5. Can you edit subject line in Outlook 2016?
6. What are header and footers?
7. What is a header?
8. Can emails be traced to a location?
9. What is an email header in Outlook?
10. How can I tell if my outlook is being monitored?

Tags

1. #document
2. #display
3. #graphic
4. #multiple
5. #header
6. #information
7. #addition
8. #footer
9. #footers
10. #numbers
11. #revised
12. #number
13. #draft
14. #contain
15. #author
16. #created
17. #descriptive
18. #typically
19. #headers
20. #revision
21. #documents