| Client-Server Mail Protocols FAQ: A brief summary of POP3, SMTP, and IMAP, including pointers to sources and frequently-asked-questions sites. | |
| Email Addressing FAQ: The user+box@host addressing FAQ. A discussion of what exactly is permissible and verifiable in an e-mail address. | |
| Internet Mail Consortium: Information about IMC and its members, all the Internet mail standards, and links to several IMC-hosted mailing lists. | |
| Message Access Paradigms and Protocols: Provides extensive background and compares the Post Office Protocol (POP) with the Internet Message Access Protocol (IMAP). | |
| MIME Meta-FAQ: comp.mail.mime meta-FAQ: Help for MIME problems. Pointers to information about Multipurpose Internet Mail Extensions and some answers to common problems with MIME. | |
| Network Services and Applications: A series of lecture notes and slides from the Faculty of Informatics and Communication, Central Queensland University. Covers many mail protocols. | |
| The IMAP Connection: University of Washington collection of IMAP documentation and resources. |
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