Editing Email client (section)

==Message composition==
Email clients usually contain [[Graphical user interface|user interface]]s to display and edit text. Some applications permit the use of a program-external editor.

The email clients will perform formatting according to {{IETF RFC|5322}} for [[E-mail#Header|headers]] and [[E-mail#Body|body]], and [[MIME]] for non-textual content and attachments. Headers include the destination fields, ''To'', ''Cc'' (short for ''Carbon copy''), and ''Bcc'' (''Blind carbon copy''), and the originator fields ''From'' which is the message's author(s), ''Sender'' in case there are more authors, and ''Reply-To'' in case responses should be addressed to a different mailbox. To better assist the user with destination fields, many clients maintain one or more address books and/or are able to connect to an [[LDAP]] directory server. For originator fields, clients may support different identities.

Client settings require the user's ''real name'' and ''email address'' for each user's identity, and possibly a list of LDAP servers.