Decision Workspace
zsmtp vs vsmtp vs stalwart_mta_hook_types
Side-by-side comparison of Rust crates
43
zsmtp
experimentalv0.1.0
A zero-knowledge SMTP mail transfer agent prototype
55
vsmtp
growingv2.2.1
Next-gen Mail Transfer Agent (MTA) written in Rust.
44
stalwart_mta_hook_types
experimentalv0.1.1
Rust type definitions for Stalwart Mail Transfer Agent (MTA) hooks
Core Metrics
| zsmtp | vsmtp | stalwart_mta_hook_types | |
|---|---|---|---|
| Health Score | 43 | 55 | 44 |
| Total Downloads | 17 | 40.6K | 931 |
| 30d Downloads | 0 | 0 | 0 |
| Dependents | 0 | 0 | 0 |
| Releases | 1 | 36 | 2 |
| Last Updated | 37d ago | 1151d ago | 343d ago |
| Age | 1m | 4y | 11m |
Health Breakdown
zsmtp
Maintenance
11
Quality
12
Community
6
Popularity
1
Documentation
13
vsmtp
Maintenance
7
Quality
20
Community
7
Popularity
6
Documentation
15
stalwart_mta_hook_types
Maintenance
7
Quality
14
Community
6
Popularity
4
Documentation
13
Technical Details
| zsmtp | vsmtp | stalwart_mta_hook_types | |
|---|---|---|---|
| Version | 0.1.0 | 2.2.1 | 0.1.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | BSD-3-Clause | GPL-3.0-only | AGPL-3.0-only |
| Dependencies | 11 | 24 | 2 |
| Crate Size | 28KB | 32KB | 9KB |
| Features | 0 | 6 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2021 | 2021 |
| MSRV | — | 1.66.1 | — |
| Owners | 1 | 2 | 1 |
Links
Quick Verdict
- •vsmtp leads with a health score of 55/100, but none of the options score above 80.
- •⚠ vsmtp has not been updated in over a year.
- •zsmtp, stalwart_mta_hook_types are pre-1.0 — API may change.