When you reply to a mail, the original mail is often shown with a preamble that gives some contextual information on that mail.
There are two common styles:
- Mobile Headers (Gmail Style) – The one [global-string] used so far, and is essentially a one liner that declares who sent the original mail and when.
- Full headers (Outlook Style) – A more elaborated style, where Sender and Recipients are shown each as a header.