How Stuff Works: E-mail:Thorough description of how the Internet's e-mail system works, including SMTP and POP3.
A Beginner's Guide to Effective E-mail: Write e-mail messages that will get noticed, read, properly understood, and responded to.
Composing E-mail Messages: Explains the steps taken in composing, replying to, and sending messages.
Dan's Mail Format Site: Includes guidelines on quoting and attachments, information about headers, and mail client configuration.
E-mail Replies: Tips on implementing mail policies, etiquette, rules and management software to improve the effectiveness of business communications.
E-mail Resources: Tips and tricks, beginner's articles, software downloads, spam management, and general help. From About.com
E-mail security tutorial: "How to keep and tell secrets using e-mail" outlines e-mail security basics.
eMailman: Coverage of all issues related to the usage of e-mail.
Flash Your E-mail: Spice-up your messages with a Flash signature file.
How to Cope with too Much E-mail: Learn the cause of this problem and some possible solutions.
Learn the Net: Harnessing E-mail: Explains the features and usage of e-mail step by step. From About.com: Internet for Beginners.
Managing Incoming Email: Report explaining how users can cope with increasing amounts of e-mail. [PDF]
Managing the E-mail Explosion: PC Magazine article, provides a list of tips and tricks for managing today's seemingly endless flow of e-mail.
Microsoft: All About E-mail: Descriptions of e-mail clients, terminology, attachments, and security.
Pine Information Center: Official web page for this Unix based mail program by Computing and Communications at the University of Washington.
The Mutt E-Mail Client: Documentation for this text-based mail client for Unix operating systems.
The Tos and Froms of E-Mail: Illustrates the parts of a message, discusses common mistakes, and highlights program features.