Email Sleuth
Email Sleuth: A self-hostable command-line email finder with batch lookup and verification. Ranked #27 of 33 in Email Finder Software by our editors (6.7/10); pricing: Open source; best for developers wanting self-hosted email lookup.
At a glance
- Editor score6.7 / 10
- PricingOpen source
- Best forDevelopers wanting self-hosted email lookup
- Paid fromFree
- Facts checked19 Sep 2026
Where it wins
- Finds likely addresses from contact names and company domains
- Supports batch processing from JSON input files
- Combines DNS, SMTP, API-based, and optional browser checks
Where it doesn't
- Requires command-line use rather than a browser extension
- Does not provide public API access
- Lacks commercial platform integrations
Our verdict on Email Sleuth
Email Sleuth is an open-source Rust command-line application for finding professional email addresses from a contact name and company domain. It is aimed at developers who want to run email lookup locally or self-host it, rather than work through a browser-based prospecting interface. Local executables are available for Windows, macOS, and Linux, and the project is MIT-licensed.
The workflow covers both individual lookups and batch processing from JSON input files. Email Sleuth generates likely address patterns, scrapes websites, and can check candidates through DNS, SMTP, and API-based verification; optional headless-browser checks add another verification method. Results include candidate emails, confidence scores, methods used, and verification status in JSON output. ChromeDriver service management is also included, which is relevant for teams choosing to enable browser verification. This makes the tool a fit for technical workflows that can consume command-line input and structured output, especially when processing multiple contacts.
The trade-off is its narrow, developer-oriented ecosystem. Email Sleuth does not offer a browser extension, public product API, or commercial platform integrations, so teams looking for prospecting inside their existing sales tools may prefer another option. Its open-source distribution and local execution suit users who value control over where the tool runs and can accommodate CLI workflows. Choose it for self-hosted lookup, batch jobs, and configurable verification; avoid it if nontechnical users need a graphical interface or integrated sales workflow.
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Email Sleuth pricing
Email Sleuth fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Monthly credits | Not verified |
| Search methods | Not verified |
| Bulk search | Yes |
| Email verification | Yes |
| Browser extension | Not verified |
| API access | Not verified |
| Deployment | Desktop, Self-hosted |
| Platforms | Windows, macOS, Linux |
| Integrations | 1 integrations: ChromeDriver |
| Pricing | Open source |
| Website | github.com |
| Facts checked | 19 Sep 2026 |
Email Sleuth integrations
Email Sleuth lists 1 integrations on its own site.
- ChromeDriver
Alternatives to Email Sleuth
- HunterA broad prospecting toolkit for finding addresses, checking deliverability, and sending sequences.9.4
- Snov.ioA broad prospecting and outreach suite with a free plan and paid tiers from $39 per month.9.2
- GetProspectA database-led prospecting suite with email verification, phone discovery, and a free plan.9.1
See all Email Sleuth alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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