Decision Workspace
smtp-client vs wasm-smtp-core vs mailrs-smtp-client
Side-by-side comparison of Rust crates
33
smtp-client
growingv0.1.0
Asynchronous SMTP client library
56
wasm-smtp-core
experimentalv0.5.1
(Archived) Environment-independent SMTP client core for WASM and other constrained runtimes.
56
mailrs-smtp-client
experimentalv1.1.0
Outbound SMTP client: MX resolution, DANE/STARTTLS, response parsing — async, transport-agnostic primitives for RFC 5321 senders.
Core Metrics
| smtp-client | wasm-smtp-core | mailrs-smtp-client | |
|---|---|---|---|
| Health Score | 33 | 56 | 56 |
| Total Downloads | 1.7K | 84 | 97 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 5 | 6 |
| Releases | 1 | 6 | 5 |
| Last Updated | 1324d ago | 27d ago | 2d ago |
| Age | 3y 7m | 27d | 6d |
Health Breakdown
smtp-client
Maintenance
1
Quality
13
Community
6
Popularity
4
Documentation
9
wasm-smtp-core
Maintenance
17
Quality
17
Community
8
Popularity
2
Documentation
12
mailrs-smtp-client
Maintenance
19
Quality
14
Community
8
Popularity
2
Documentation
13
Technical Details
| smtp-client | wasm-smtp-core | mailrs-smtp-client | |
|---|---|---|---|
| Version | 0.1.0 | 0.5.1 | 1.1.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 OR MIT |
| Dependencies | 11 | 0 | 8 |
| Crate Size | 8KB | 54KB | 51KB |
| Features | 0 | 3 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2018 | 2024 | 2024 |
| MSRV | — | 1.85 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •wasm-smtp-core leads with a health score of 56/100, but none of the options score above 80.
- •smtp-client has the most downloads (1.7K), suggesting wider adoption.
- •⚠ smtp-client has not been updated in over a year.
- •smtp-client, wasm-smtp-core are pre-1.0 — API may change.