Decision Workspace
outlook-exe vs lettre vs mml-lib
Side-by-side comparison of Rust crates
40
outlook-exe
growingv0.1.0
Convenience wrappers for command-line invocation of Outlook.
65
lettre
growingv0.11.19
Email client
62
mml-lib
stablev1.1.2
Rust implementation of the Emacs MIME message Meta Language (MML)
Core Metrics
| outlook-exe | lettre | mml-lib | |
|---|---|---|---|
| Health Score | 40 | 65 | 62 |
| Total Downloads | 3.3K | 8.0M | 59.8K |
| 30d Downloads | 11 | 906.3K | 7.0K |
| Dependents | 0 | 3.5K | 59 |
| Releases | 2 | 61 | 31 |
| Last Updated | 2034d ago | 170d ago | 36d ago |
| Age | 5y 12m | 10y 5m | 2y 7m |
Health Breakdown
outlook-exe
Maintenance
3
Quality
15
Community
6
Popularity
4
Documentation
12
lettre
Maintenance
11
Quality
14
Community
20
Popularity
8
Documentation
12
mml-lib
Maintenance
17
Quality
15
Community
11
Popularity
6
Documentation
13
Technical Details
| outlook-exe | lettre | mml-lib | |
|---|---|---|---|
| Version | 0.1.0 | 0.11.19 | 1.1.2 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Unlicense OR MIT | MIT | MIT |
| Dependencies | 2 | 47 | 18 |
| Crate Size | 4KB | 159KB | 67KB |
| Features | 0 | 25 | 15 |
| Yanked % | 0.0% | 0.0% | 41.9% |
| Edition | 2018 | 2021 | 2021 |
| MSRV | — | 1.74 | — |
| Owners | 1 | 2 (team) | 1 |
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.
- •⚠ outlook-exe has not been updated in over a year.
- •outlook-exe, lettre are pre-1.0 — API may change.