- RFC 5321 - Simple Mail Transfer Protocol
- RFC 5322 - Internet Message Format
- RFC 1939 - Post Office Protocol - Version 3
- RFC 3501 - INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1
- RFC 2045-2049 - Multipurpose Internet Mail Extensions (MIME)
- RFC 7208 - Sender Policy Framework (SPF) for Authorizing Use of Domains in Email, Version 1
- RFC 6376 - DomainKeys Identified Mail (DKIM) Signatures
- RFC 7489 - Domain-based Message Authentication, Reporting, and Conformance (DMARC)
- RFC 5228 - Sieve: An Email Filtering Language
- RFC 8620 - The JSON Meta Application Protocol (JMAP)
- RFC 3207 - SMTP Service Extension for Secure SMTP over Transport Layer Security
- RFC 8314 - Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access
- [美] Kevin Johnson. Internet Email Protocols: A Developer’s Guide. Addison-Wesley Professional, 1999
- [美] Kyle D. Dent. Postfix: The Definitive Guide. O’Reilly Media, 2003
- [美] John R. Levine, et al. Email Deliverability: A Practical Guide to Achieving Optimal Inbox Placement. O’Reilly Media, 2021
- 张胜生, 等. 反垃圾邮件技术与应用. 人民邮电出版社, 2007
- [美] Simson Garfinkel, Gene Spafford. Web Security, Privacy & Commerce. O’Reilly Media, 2002
- Postfix官方文档: https://www.postfix.org/documentation.html
- Dovecot官方文档: https://doc.dovecot.org/
- iRedMail官方文档: https://docs.iredmail.org/
- SpamAssassin官方文档: https://spamassassin.apache.org/doc.html
- MDN Web Docs Email相关文档: https://developer.mozilla.org/zh-CN/docs/Web/Email
- M3AAWG反垃圾邮件最佳实践报告: https://www.m3aawg.org/publications
- 2023年全球邮件安全报告 - Proofpoint
- 中国反垃圾邮件白皮书 - 中国互联网协会
- 商务邮件欺诈(BEC)攻击研究报告 - FBI互联网犯罪投诉中心
- 全球邮件营销行业报告 - Campaign Monitor
- IETF邮件工作组: https://datatracker.ietf.org/wg/email/charter/
- Spamhaus项目: https://www.spamhaus.org/
- 邮件系统架构最佳实践 - Google Cloud Architecture Center
- 邮件安全最佳实践 - Microsoft 365文档
- 自建邮件服务器指南 - Arch Linux Wiki