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Cemil Betanov, Introduction to X.400, Artech House, . Marsha Egan, "Inbox Detox and The Habit of Email Excellence ", Acanthus Publishing Lawrence Hughes, Internet e-mail Protocols, Standards and Implementation, Artech House Publishers . Kevin Johnson, Internet Email P,rotoc?ols: A Developer's Guide, Addison-Wesley Professional . Pete Loshin, Essential Email Standards: RFCs and Protocols Made Practical, John Wiley & Sons,  Sara Radicati, Elect?ronic Mail: An Introduction to the X.400 Message ,Handling Standards, Mcgraw-Hill, . John Rh!oton, Programmer's Guide to Internet Mail: SMTP, POP, IMAP, and LDAP, Elsevier, . John Rhoton, X.400 and SMTP: Battle of the E-mail Protocols, Elsevier, . David Wood, Programming Internet Mail'', O'Reilly, .