George Jones logs into his host as "Jones". He sends mail himself.
From: George Jones <Jones@Group.Org>
George Jones logs in as Jones on his host. His secretary, who logs in as Secy sends mail for him. Replies to the mail should go to George.
From: George Jones <Jones@Group> Sender: Secy@Other-Group
George Jones' secretary sends mail for George. Replies should go to George.
From: George Jones<Shared@Group.Org> Sender: Secy@Other-Group
Note that there need not be a space between "Jones" and the "<", but adding a space enhances readability (as is the case in other examples.
George is a member of a committee. He wishes to have any replies to his message go to all committee members.
From: George Jones <Jones@Host.Net> Sender: Jones@Host Reply-To: The Committee: Jones@Host.Net, Smith@Other.Org, Doe@Somewhere-Else;
Note that if George had not included himself in the enumeration of The Committee, he would not have gotten an implicit reply; the presence of the "Reply-to" field SUPERSEDES the sending of a reply to the person named in the "From" field.
George Jones asks his secretary (Secy@Host) to send a message for him in his capacity as Group. He wants his secretary to handle all replies.
From: George Jones <Group@Host> Sender: Secy@Host Reply-To: Secy@Host
A friend of George's, Sarah, is visiting. George's secretary sends some mail to a friend of Sarah in computerland. Replies should go to George, whose mailbox is Jones at Registry.
From: Sarah Friendly <Secy@Registry> Sender: Secy-Name <Secy@Registry> Reply-To: Jones@Registry.
George's secretary sends out a message which was authored jointly by all the members of a committee. Note that the name of the committee cannot be specified, since <group> names are not permitted in the From field.
From: Jones@Host, Smith@Other-Host, Doe@Somewhere-Else Sender: Secy@SHost