Alternatives

Products that do what OpenLookup.io does

one API to verify email, phone, IP, and domain

1. 1
   Email Verify API▲92

   Simple email validation API for a $39 lifetime license

   2021

2. 2
   Proofy▲181

   Quickly validate and verify your email lists.

   2016

3. 3
   Clearbit's Risk API▲189

   Identify spam signups & bad actors

   2017

4. 4
   IPLookup.tech▲1

   Free IP intelligence: lookup, leak tests & risk scoring

   3d ago · iplookup.tech

5. 5
   IPTrace▲143

   API to build location-aware mobile and web apps

   2018

6. 6
   Checker▲124

   Detect fake signups in under 200ms with an easy-to-use API

   2025

7. 7
   MailCheck▲49

   Stop Free Trial Abuse with Advanced Email Verification

   2025

8. 8
   Metlo API Security▲207

   Open source API security platform

   2022

9. 9
   RiskyVerifier▲28

   Verify Catch all, Unknown and Risky Emails with 98% Accuracy

   2025

10. 10
    Openstatus MCP Health Checker ▲207

    Test MCP servers like a real AI client, not just a ping

    May 2026

11. 11
    ZeroBounce▲163

    Email verification platform, 99%+ accurate

    2018

12. 12
    Website Metadata Scraper API▲215

    Extract email, phone number and more from just a URL.

    2018

13. 13
    NsLookup▲72

    A simple and powerful tool for querying DNS records

    2020

14. 14
    Danger▲119

    Catch fake details, block throwaway emails, spot problem IPs

    2024

15. 15
    Free Email Verifier▲202

    The first free and accurate email verification service

    2020

16. 16
    IPLocate▲95

    1,500 free IP address lookups per day. One, quick request.

    2018

17. 17
    Mailcheap▲123

    Email hosting, dedicated email servers, API-first platform

    2018

18. 18
    SimpleLogin▲116

    Open source email alias. Clean inbox. Custom domain, PGP,...

    2021

19. 19
    Proofy 2.0▲199

    A bulk email verification service

    2019

20. 20
    Greip▲83

    Helps you to protect your website/app from fraud & abuse

    2022

21. 21
    RiskUnified▲2

    Email, phone & IP risk intelligence in one API

    26d ago · riskunified.com

22. 22
    Folderly Lens ▲107

    Domain health analysis for high performance email campaigns

    Jul 2026 · lens.folderly.com

23. 23IG
    IP Geolocation and Threat Data API▲79

    2018 · ipdata.co

24. 24
    Email Bounce Checker from BlockSurvey▲98

    Privacy-focused email bounce checker. No ads, no trackers.

    2022

Ranked by how close each launch is in meaning, then by votes. Refine with a description →