Reacher review (2026): is it any good?
Open-source email verification engine with an HTTP backend
Reacher report card
Fair · out of 4.0 · graded Nov 13, 2026
Best for developers hosting their own email verifier
Reacher is an open-source email verification engine you host yourself, under the MIT license. Mail servers often block verification traffic from unknown IPs, and the hosted version with catch-all checks is a separate service.
Who Reacher is for
- Fits if you can run a server and want verification inside your own system
- Works for developers who want to read and change the source
Who Reacher is not for
- Skip it if you do not want to host and maintain a server
- Watch out: the pricing page says mail servers often limit or block checks from unknown IPs
- Watch out: catch-all checks and hosted verification are a separate service, No2Bounce
- Watch out: the SMTP proxy service is separate and paid; its prices were not read
Why Reacher gets a 2.0
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyFree software, but you supply and run the server, which makes it a C under the ladder. The proxy service and hosted checks are priced separately and were not read.
- BFree plan and trialThe engine is free to download and run under MIT. It costs you a server and an IP that mail servers will accept.
- CFeaturesSMTP-based address check behind an HTTP backend. Catch-all checks come from a separate hosted service.
- DEase of useSelf-hosting, and an HTTP API to call it. No rating on record.
- CPlatforms and integrationsWeb only, and no integrations are listed. You get the source and an HTTP backend.
What these grades rest on. Graded from this listing, whose facts were read from Reacher's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/reacher#review"><img src="https://toolgpa.com/badge/reacher.svg" alt="Reacher: 2.0 GPA on ToolGPA" width="196" height="56"></a>Where Reacher stands among email verification and deliverability tools
Reacher's GPA of 2.0 is higher than 8 of the 61 other email verification and deliverability tools we grade, and level with 14.
It stands best on free plan and trial (B, above 53 of 61) and worst on ease of use (D, above 0).
Reacher has no paid plan.
On features, ease of use and platforms it scores 1.7 out of 4, and no tool on the category's chart scores higher without costing more.
Each grade against the category
Every bar is all 62 email verification and deliverability tools we grade, cut by the letter each got. Reacher’s own letter is outlined.
- CValue for moneyAbove 9 of 61, level with 35
- BFree plan and trialAbove 53 of 61, level with 8
- CFeaturesAbove 0 of 61, level with 45
- DEase of useAbove 0 of 61, level with 1
- CPlatforms and integrationsAbove 0 of 61, level with 27
Price against what you get
Each dot is one of 45 email verification and deliverability tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Reacher, or make your own?
Keep it
Reacher is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces. That makes this kind of software worth paying for, not this one in particular: 39 of the 61 other email verification and deliverability tools grade higher.
What you could not
- Checking that an address exists without writing to it.
- An API that other software can build on.
What this rests on. Reacher’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Reacher?
Reacher checks whether an email address exists by talking to the recipient's mail server, without sending a message. It is open-source software under the MIT license, written in Rust and run on your own infrastructure. A hosted version is offered through a separate service, No2Bounce, and a proxy service handles port 25 traffic.
Worth knowing
- You host and maintain it yourself; the pricing page says mail servers often limit or block verification traffic from unknown IP addresses.
- Hosted verification, including catch-all checks, is a separate service called No2Bounce with usage-based pricing, which was not priced on the Reacher pages.
- The Reacher site says it is owned by No2Bounce.
- The SMTP proxy service is a separate paid offering; its prices were not read.
Key features
- SMTP-based address check
- Checks whether a mailbox exists without sending an email; the GitHub project describes it as written in Rust.
- HTTP backend
- The repository comes with an HTTP backend, so the verifier can be called as an API from your own applications.
- Modifiable source
- The MIT-licensed code can be downloaded, changed and built into your own verification system.
- Port 25 SMTP proxies
- A separate Reacher service offers managed IP pools with rotation and MX-aware routing, for senders whose servers block verification traffic.
Reacher pricing
As of Nov 13, 2026, Reacher is free to use.
- Starts at
- Free
- Free plan
- The open-source engine is free to download and run yourself under the MIT license.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Self-hosted Reacher | $0 | Open-source software you run on your own servers. You supply the infrastructure. |
Read from reacher.email on Nov 13, 2026. Prices change, so confirm with Reacher before you buy.
Reacher alternatives
- Reacher vs Bouncer
Free trial · from $8 one-time
- Reacher vs Emailable
Free trial · from $38 one-time
- Reacher vs MillionVerifier
Free trial · from $39 one-time
- Reacher vs Reoon Email Verifier
Free plan · from $9/mo
- Reacher vs MailTester.ninja
Free plan · from $6.99
Common questions
Does Reacher have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Reacher is listed for Web.
Does Reacher have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Reacher is listed for Web.
Is Reacher open source?
Yes. Reacher is open source, according to its own site. It can also be run on a server of your own.
Does Reacher have an API?
Yes. Reacher offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.