Cited in: RFC 5233
5 RFCs mentioned in the text of RFC 5233 (Sieve Email Filtering: Subaddress Extension)
| RFC | Title | Status | Date |
|---|---|---|---|
| 2119 | Key words for use in RFCs to Indicate Requirement Levels | Best Current Practice | March 1997 |
| 2606 | Reserved Top Level DNS Names | Best Current Practice | June 1999 |
| 2822 | Internet Message Format | Proposed Standard | April 2001 |
| 3598 | Sieve Email Filtering -- Subaddress Extension | Proposed Standard | September 2003 |
| 5228 | Sieve: An Email Filtering Language | Proposed Standard | January 2008 |