Alternatives

Products that do what Sentinel does

A chrome addon that scan your emails for any phishing attack

1. 1
   Email Hunter for Chrome▲366

   Find all the emails related to a domain with just one click

   2015

2. 2
   Creep Alert▲131

   Check if friends or colleagues track you via email

   2019

3. 3
   WebSafely Extension▲113

   Instantly know if a site is a scam, right from your browser

   2025

4. 4
   Scary Senders▲123

   Detect spooky spy pixels in your emails

   2021

5. 5
   Reply: Email Search▲404

   Free email search on LinkedIn

   2020

6. 6
   Ugly Email▲419

   See if an email is being tracked before you open it in Gmail

   2015

7. 7
   Unspam.email▲309

   Email spam checker and newsletter heatmap prediction.

   2020

8. 8
   Suspicious Site Reporter▲74

   Report suspicious sites to Google

   2019

9. 9
   B.S. Detector▲227

   Identify fake news sources on Facebook in Chrome

   2016

10. 10
    Web3 Antivirus Extension 2.0▲140

    Bring confidence and security to your Web3 transactions

    2024

11. 11
    Email Open Tracker for GMAIL▲126

    Keep an eye on your email opens

    2024

12. 12
    MailSnitch▲156

    Tag your emails to see who’s selling it

    2025

13. 13
    Extension Police▲115

    Police your chrome extensions

    2018

14. 14
    Password Checkup by Google▲178

    A Chrome Extension to help resecure hacked accounts

    2019

15. 15
    Uppward Chrome Extension▲109

    Protect yourself from crypto scams and frauds

    2018

16. 16
    SELLsecure Scams investigator▲78

    Check who is behind an email and detect fraud

    2017

17. 17
    Extension Monitor▲87

    Track browser extension installations / threats in real-time

    2019

18. 18
    Send Sleuth▲82

    Bulk validate emails in Google Sheets

    2022

19. 19
    Haven▲13

    The AI extension that catches phishing and email threats

    Jun 2026 · starthaven.com

20. 20
    Email Hunter▲81

    Find emails on websites

    2022

21. 21
    Dr. Link Check▲75

    Broken link checker with malware and parked domain detection

    2018

22. 22
    Email Scam Detector▲2

    Instantly spot phishing & email scams with browser-based AI

    Jun 2026 · emailscamdetect.netlify.app

23. 23IM
    I made an open source Chrome extension to notify you of new HN replies▲24

    2022 · github.com

24. 24
    Phishly▲6

    AI phishing detection in one click

    Oct 2025

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