Support for IMAP4rev2 (RFC 9051) and SMTPUTF8 (RFC 6531)
- Dominant language
- Rust
- Stars
- 583
- Forks
- 94
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Description
IMAP4rev2 is the latest revision of the IMAP protocol and brings a number of improvements, clarifications and standardisations compared to IMAP4rev1.
Why IMAP4rev2 is important:
1. IMAP4rev2 combines numerous extensions that were previously optional (e.g. ENABLE, UTF8=ACCEPT, LITERAL+, IDLE, etc.). .
2. Many older inconsistencies have been eliminated, simplifying implementations.
3. Modern mail servers (e.g. Dovecot, Cyrus) are already beginning to officially support IMAP4rev2.
Full support would make Rust-IMAP future-proof and standards-compliant.
Proposal:
1. Gradual implementation of the mandatory extensions
2. Possibly a feature flag imap4rev2 for gradual activation
References:
RFC 9051 – IMAP4rev2
RFC 6531 – SMTPUTF8
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