Crates / postmark / Alternatives
Rust crate alternatives · data Oct 27, 2026
Alternatives to postmark
Short answerThe closest alternatives to postmark on crates.io data are k8s-openapi (265K real downloads a day), hyper (2.8M real downloads a day), hyper-util (1.9M real downloads a day). Of the 8 we list, the most used is hyper, and 8 shipped a release in the last year. postmark itself gets 133 a day with 1 dependents.
Every alternative we found
| Alternative | Real downloads a day | vs postmark | Dependents | Last release | Why it is listed | |
|---|---|---|---|---|---|---|
| k8s-openapi Established | 265,277 | 1994.56x | 943 | 4mo | category API bindings, category HTTP client, keyword "http" | compare |
| hyper Widely used | 2,783,528 | 20928.78x | 5,861 | 18d | category HTTP client, keyword "http" | compare |
| hyper-util Widely used | 1,948,171 | 14647.90x | 3,155 | 30d | category HTTP client, keyword "http" | compare |
| ureq Widely used | 840,482 | 6319.41x | 4,472 | 3d | category HTTP client, keyword "http" | compare |
| cookie_store Established | 318,087 | 2391.63x | 132 | 8mo | category HTTP client, keyword "http" | compare |
| reqwest-middleware Established | 249,146 | 1873.28x | 556 | 5mo | category HTTP client, keyword "http" | compare |
| lettre Established | 89,482 | 672.80x | 494 | 3mo | category Email, keyword "email" | compare |
| resend-rs Pulled in | 4,094 | 30.78x | 8 | 9d | category Email, keyword "email" | compare |
How to choose
- Same job, not the same API. Each line is listed because it shares a crates.io category or keyword with postmark; read its description before you swap.
- More dependents means more answered questions and a smaller chance it disappears.
- Check the last release against how fast you need fixes. For postmark: is it still maintained?
Rules
Alternatives = tracked crates (top 1000 by downloads) that share a specific crates.io category (2 points each) or keyword (3 points each) with postmark, most similar first; its own parts (same name prefix) and crates it depends on or that depend on it are left out, because those are companions, not substitutes. Real downloads = quiet-day median, crates.io data Oct 27, 2026. Built when we find 3 or more.
Up next
The closest alternative: Established and steady. 265,277 real downloads a day.k8s-openapiRust crate. Bindings for the Kubernetes client API. Real use: 265K downloads a day on quiet days; 943 crates depend on it.Read it next →Also worth your time
Art: Nicholas Roerich, Nag Lake (1925). Public domain, via Wikimedia Commons.
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