Decision Workspace
smtp-codec vs imap-codec vs mailrs-smtp-proto
Side-by-side comparison of Rust crates
37
smtp-codec
growingv0.2.0
Low-level SMTP Parser and Serializer
61
imap-codec
stablev1.0.0
Rock-solid and complete codec for IMAP
56
mailrs-smtp-proto
experimentalv1.0.4
SMTP protocol parser, formatter, and session state machine (RFC 5321) — zero I/O, async-runtime-agnostic.
Core Metrics
| smtp-codec | imap-codec | mailrs-smtp-proto | |
|---|---|---|---|
| Health Score | 37 | 61 | 56 |
| Total Downloads | 7.5K | 69.5K | 80 |
| 30d Downloads | 0 | 6.7K | 0 |
| Dependents | 0 | 25 | 0 |
| Releases | 2 | 20 | 5 |
| Last Updated | 1444d ago | 97d ago | 4d ago |
| Age | 5y 3m | 5y 3m | 6d |
Health Breakdown
smtp-codec
Maintenance
3
Quality
17
Community
3
Popularity
5
Documentation
9
imap-codec
Maintenance
13
Quality
22
Community
10
Popularity
6
Documentation
10
mailrs-smtp-proto
Maintenance
19
Quality
16
Community
6
Popularity
2
Documentation
13
Technical Details
| smtp-codec | imap-codec | mailrs-smtp-proto | |
|---|---|---|---|
| Version | 0.2.0 | 1.0.0 | 1.0.4 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | Apache-2.0 OR MIT |
| Dependencies | 3 | 11 | 2 |
| Crate Size | 24KB | 69KB | 39KB |
| Features | 2 | 11 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2021 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •imap-codec leads with a health score of 61/100, but none of the options score above 80.
- •⚠ smtp-codec has not been updated in over a year.
- •smtp-codec is pre-1.0 — API may change.