Decision Workspace
letterman_email_body_parser vs mailrs-smtp-proto vs mailrs-rfc5322
Side-by-side comparison of Rust crates
46
letterman_email_body_parser
growingv1.0.5
this is a tokio based fast and optimized email body parser and dkim validator.
56
mailrs-smtp-proto
experimentalv1.0.4
SMTP protocol parser, formatter, and session state machine (RFC 5321) — zero I/O, async-runtime-agnostic.
53
mailrs-rfc5322
experimentalv1.0.1
Pull-based RFC 5322 message parser — lazy header lookup, byte-level scan, zero-alloc borrowed slices. Skip-ahead to the header you want without building a full Message tree.
Core Metrics
| letterman_email_body_parser | mailrs-smtp-proto | mailrs-rfc5322 | |
|---|---|---|---|
| Health Score | 46 | 56 | 53 |
| Total Downloads | 9.4K | 80 | 49 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 18 | 0 | 4 |
| Releases | 6 | 5 | 2 |
| Last Updated | 1543d ago | 4d ago | 3d ago |
| Age | 4y 5m | 6d | 4d |
Health Breakdown
letterman_email_body_parser
Maintenance
4
Quality
19
Community
9
Popularity
5
Documentation
9
mailrs-smtp-proto
Maintenance
19
Quality
16
Community
6
Popularity
2
Documentation
13
mailrs-rfc5322
Maintenance
14
Quality
16
Community
8
Popularity
2
Documentation
13
Technical Details
| letterman_email_body_parser | mailrs-smtp-proto | mailrs-rfc5322 | |
|---|---|---|---|
| Version | 1.0.5 | 1.0.4 | 1.0.1 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✓ Yes |
| License | GPL-3.0 | Apache-2.0 OR MIT | Apache-2.0 OR MIT |
| Dependencies | 6 | 2 | 2 |
| Crate Size | 36KB | 39KB | 24KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2024 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •mailrs-smtp-proto leads with a health score of 56/100, but none of the options score above 80.
- •letterman_email_body_parser has the most downloads (9.4K), suggesting wider adoption.
- •⚠ letterman_email_body_parser has not been updated in over a year.