Effective Altruism newsletters

NewsletterFIT tracks 14 newsletters that cover Effective Altruism as a primary topic, 12 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are User Mag (98K), The Dossier (56K) and Programmable Mutter (30K). Brands detected sponsoring these newsletters recently include Waymo.

Updated Nov 1, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    User Mag98K subscribers

    SubstackWeekly · last post 33 days ago

    Likely audience: AI researchers

  2. 2
    The Dossier56K subscribers

    SubstackMonthly or less · last post 29 days ago

    Likely audience: Tech industry leaders

  3. 3
    Programmable Mutter30K subscribers

    SubstackWeekly · last post 29 days ago

    Likely audience: Tech policy analysts

  4. 4
    The Healthiest Goldfish21K subscribers

    SubstackEvery two weeks · last post 14 days ago

    Likely audience: Public health professionals

  5. 5
    Bentham's Newsletter10K subscribers

    SubstackWeekly · last post 19 days ago

    Likely audience: AI researchers

  6. 6
    Bold Reasoning with Peter Singer8K subscribers

    SubstackEvery two weeks · last post 11 days ago

    Likely audience: Philanthropists

  7. 7
    Good Thoughts6K subscribers

    SubstackEvery two weeks · last post 26 days ago

    Likely audience: Policy analysts

  8. 8
    Dark Markets3K subscribers

    SubstackEvery two weeks · last post 10 days ago

    Likely audience: Effective Altruism practitioners

  9. 9
    UPDATE YOU!3K subscribers

    SubstackEvery two weeks · last post 20 days ago

    Likely audience: Policy makers

  10. 10
    Positive Sum2K subscribers

    SubstackEvery two weeks · last post 23 days ago

    Likely audience: AI safety researchers

  11. 11
    Astral Codex Ten—

    SubstackWeekly · last post 19 days ago

    Likely audience: AI researchers

  12. 12
    Too Online by Boys Club—

    beehiivEvery two weeks · last post 29 days ago

    Likely audience: AI safety researchers

    Sponsors detected: Waymo

  13. 13
    Aaron's Blog—

    Substacklast post Jul 9, 2026

    Likely audience: Effective Altruists

  14. 14
    A Few Billion—

    Substacklast post Nov 30, 2022

    Likely audience: animal rights advocates

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