Decision Workspace
async-smtp vs lettre vs email-message
Side-by-side comparison of Rust crates
51
async-smtp
growingv0.10.2
SMTP client
69
lettre
growingv0.11.22
Email client
55
email-message
experimentalv0.7.0
Typed outbound email message and address model
Core Metrics
| async-smtp | lettre | email-message | |
|---|---|---|---|
| Health Score | 51 | 69 | 55 |
| Total Downloads | 536.8K | 12.9M | 407 |
| 30d Downloads | 21.9K | 905.6K | 0 |
| Dependents | 105 | 5.6K | 27 |
| Releases | 17 | 64 | 10 |
| Last Updated | 426d ago | 60d ago | 71d ago |
| Age | 6y 8m | 10y 8m | 4m |
Health Breakdown
async-smtp
Maintenance
6
Quality
15
Community
13
Popularity
7
Documentation
10
lettre
Maintenance
15
Quality
14
Community
20
Popularity
8
Documentation
12
email-message
Maintenance
15
Quality
15
Community
10
Popularity
3
Documentation
12
Technical Details
| async-smtp | lettre | email-message | |
|---|---|---|---|
| Version | 0.10.2 | 0.11.22 | 0.7.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT | MIT |
| Dependencies | 14 | 46 | 12 |
| Crate Size | 31KB | 161KB | 55KB |
| Features | 3 | 26 | 6 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | — | 1.85 | 1.92 |
| Owners | 2 | 2 (team) | 1 |
Links
Quick Verdict
- •lettre leads with a health score of 69/100, but none of the options score above 80.
- •lettre is depended on by 5.6K crates — strongest ecosystem trust.
- •⚠ async-smtp has not been updated in over a year.