Reply A message sent in response to a received message. Reply All Generates a reply message addressed to all of the recipients of the selected message. Not all e-mail services offer this function. A few lines of text automatically added to the end of an outgoing message. Having a signature set up just means one less thing for you to remember to type at the end of an out-going message.
Some services allow users to create and use several signatures.
An indication by the sender as to what the e-mail message concerns or is about. It is considered bad form to leave the Subject field blank in fact many people will automatically delete a message with an empty Subject field if they do not recognize the address of the sender. To Enter the e-mail address of the recipient here. An attachment is a file attached to an e-mail message. The attached document does not appear within the message text of your e-mail.