Side by side
Email Sleuth vs FindThat.Email
Both stand on email finder software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacWindows
Email Sleuth combines contact discovery, verification, and batch JSON handling in a cross-platform command-line tool. Port 25 restrictions may require enhanced or comprehensive verification, a suitable server, or another permitted connection.
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Free plan Extension
FindThat.Email combines email discovery, reverse lookup, bulk processing, verification, and LinkedIn collection in a Chrome extension. The free options provide limited access, while paid use removes the listed search limit but cannot guarantee every result.
Visit FindThat.EmailThe facts
| Email Sleuth | FindThat.Email | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Mac, Windows | Extension |
| Lowest paid plan | Not published | Unlimited: $19 a month |
| Plans published | None | 1 |
| Maker | Not published | Not published |
| Website | github.com | findthatemail.io |
| On email finder software | #15 of 33 | #19 of 33 |
Email Sleuth: what it does well
- Free and open source
- Single and batch lookups
- Three verification modes
- JSON output options
- Linux, macOS, and Windows support
What to know first
- SMTP checks require outbound port 25
- Many ISPs block port 25
- API providers are not named
FindThat.Email: what it does well
- Find names from company domains and reverse-look up emails
- Bulk search accepts one item per line
- Verify multiple email addresses
- Collect LinkedIn names into a clipboard
- Export results as CSV
What to know first
- Results are not guaranteed complete
- Trial limited to 10 emails monthly
- Unlimited plan costs $19/month
- Chrome extension required
Alternatives to Email Sleuth Alternatives to FindThat.Email The whole list