Alternatives

Products that do what Klopio does

See whos tracking your inbox, before they know you opened it

1. 1
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2. 2
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3. 3
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4. 4
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5. 5
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6. 6
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7. 7
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8. 8
   Inbox Shield by Leave Me Alone▲441

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9. 9
   Doubletick for Gmail▲120

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10. 10
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    2014

11. 11
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    2017

12. 12
    Signals (iOS app)▲74

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13. 13
    PromoTab▲154

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14. 14
    Gro v2▲263

    Spot signals, trigger outreach - turn posts into pipeline

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15. 15
    Mailivery▲251

    Reach the inbox, not the spam folder

    2021

16. 16
    ContextSmith Free Email Tracker▲121

    Know when and where your emails are read

    2017

17. 17
    Silent Inbox for Gmail▲251

    Receive unimportant emails and newsletters on your schedule

    2020

18. 18
    Gblock▲107

    Block email tracking in Gmail

    2025

19. 19
    Sherloq▲78

    Know which LinkedIn prospect is warm - right now

    May 2026 · gosherloq.com

20. 20
    Snovio▲189

    Find, verify, send and track business emails easily

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21. 21
    Mailpanion▲74

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22. 22
    Inbox, Spam, or Promotions?▲83

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    2018

23. 23
    Interseller▲174

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    2017

24. 24
    Leadigger▲146

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