Decision Workspace
lettre_email vs lettre vs async-smtp
Side-by-side comparison of Rust crates
43
lettre_email
growingv0.9.4
Email builder
65
lettre
growingv0.11.19
Email client
52
async-smtp
growingv0.10.2
SMTP client
Core Metrics
| lettre_email | lettre | async-smtp | |
|---|---|---|---|
| Health Score | 43 | 65 | 52 |
| Total Downloads | 789.3K | 8.0M | 427.9K |
| 30d Downloads | 9.2K | 906.3K | 31.5K |
| Dependents | 239 | 3.5K | 104 |
| Releases | 10 | 61 | 17 |
| Last Updated | 2166d ago | 170d ago | 318d ago |
| Age | 8y 5m | 10y 5m | 6y 4m |
Health Breakdown
lettre_email
Maintenance
5
Quality
13
Community
10
Popularity
7
Documentation
8
lettre
Maintenance
11
Quality
14
Community
20
Popularity
8
Documentation
12
async-smtp
Maintenance
7
Quality
15
Community
13
Popularity
7
Documentation
10
Technical Details
| lettre_email | lettre | async-smtp | |
|---|---|---|---|
| Version | 0.9.4 | 0.11.19 | 0.10.2 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | MIT | MIT OR Apache-2.0 |
| Dependencies | 8 | 47 | 14 |
| Crate Size | 16KB | 159KB | 31KB |
| Features | 0 | 25 | 3 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | — | 2021 | 2021 |
| MSRV | — | 1.74 | — |
| Owners | 1 | 2 (team) | 2 |
Links
Quick Verdict
- •lettre leads with a health score of 65/100, but none of the options score above 80.
- •lettre is depended on by 3.5K crates — strongest ecosystem trust.
- •⚠ lettre_email has not been updated in over a year.