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Appendix B. Differences from RFC 2822

This appendix lists the differences between this specification and RFC 2822.

Major Changes​

1. Clarifications​

  • Clarified folding white space rules
  • Improved ABNF syntax definitions
  • Enhanced obsolete syntax documentation

2. Technical Updates​

  • Updated normative references
  • Refined message format specifications
  • Improved address parsing guidelines

3. Editorial Improvements​

  • Reorganized sections for clarity
  • Enhanced examples and explanations
  • Corrected known errata from RFC 2822

Summary​

RFC 5322 is primarily a clarification and refinement of RFC 2822, with no major protocol changes. Implementations conforming to RFC 2822 should require minimal changes to conform to RFC 5322.

Note: For detailed differences, please refer to the official RFC 5322 specification.

Next: Appendix C. Acknowledgements

Previous: Appendix A. Example Messages

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