Decision Workspace
mailin vs smtp_recv vs MailLaser
Side-by-side comparison of Rust crates
45
mailin
growingv0.6.5
A library for writing SMTP servers
52
smtp_recv
experimentalv0.1.65
Dual-port SMTP server: Secure submission (465) & Inbound forwarding (25) / 双端口 SMTP 服务：安全提交 (465) 与入站转发 (25)
49
MailLaser
growingv2.0.0
An SMTP server that listens for incoming emails addressed to a specific recipient and forwards them as HTTP POST requests to a configured webhook.
Core Metrics
| mailin | smtp_recv | MailLaser | |
|---|---|---|---|
| Health Score | 45 | 52 | 49 |
| Total Downloads | 101.3K | 1.2K | 753 |
| 30d Downloads | 6.1K | 91 | 5 |
| Dependents | 21 | 25 | 0 |
| Releases | 14 | 52 | 3 |
| Last Updated | 573d ago | 11d ago | 43d ago |
| Age | 7y 3m | 3m | 11m |
Health Breakdown
mailin
Maintenance
5
Quality
14
Community
10
Popularity
6
Documentation
10
smtp_recv
Maintenance
18
Quality
12
Community
10
Popularity
4
Documentation
8
MailLaser
Maintenance
16
Quality
14
Community
6
Popularity
3
Documentation
10
Technical Details
| mailin | smtp_recv | MailLaser | |
|---|---|---|---|
| Version | 0.6.5 | 0.1.65 | 2.0.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MulanPSL-2.0 | MIT |
| Dependencies | 5 | 32 | 26 |
| Crate Size | 13KB | 55KB | 79KB |
| Features | 0 | 4 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •smtp_recv leads with a health score of 52/100, but none of the options score above 80.
- •mailin has the most downloads (101.3K), suggesting wider adoption.
- •⚠ mailin has not been updated in over a year.
- •mailin, smtp_recv are pre-1.0 — API may change.