Reacherhq Check if email exists by reacherhq
Check if an email address exists without sending any email, written in Rust. Comes with a HTTP backend.
About Reacherhq Check if email exists
From the project's README at github.com/reacherhq/check-if-email-exists. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://crates.io/crates/check-if-email-exists) [](https://docs.rs/check-if-email-exists) [](https://hub.docker.com/r/reacherhq/backend) [](https://github.com/reacherhq/check-if-email-exists/actions)
check-if-email-exists Check if an email address exists without sending any email. Comes with a HTTP backend . Live Demo: https://reacher.email
This is open-source, but I also offer a SaaS solution that has packaged in a nice friendly web interface. If you are interested, find out more at No2Bounce.com. If you have any questions, you can contact me at [email protected]. Get Started
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 8.6k | github.com/reacherhq/check-if-email-exists |
| GitHub forks | 614 | github.com/reacherhq/check-if-email-exists |
| Docker Hub pulls | 21k | hub.docker.com / reacherhq |
| CRATES downloads (last month) | 24k | check-if-email-exists |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 9.0 years | since Apr 2017 |
| Last commit | 2 months ago | Mar 17, 2026 |
| Releases shipped | 74 | last: 4 months ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Ready to self-host Reacherhq Check if email exists?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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