Kindle Unlimited newsletters

NewsletterFIT tracks 3 newsletters that cover Kindle Unlimited as a primary topic, 2 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Shelf Space Sci-Fi (46K) and Lena Gibson (8K).

Updated Oct 31, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Shelf Space Sci-Fi46K subscribers

    SubstackEvery two weeks · last post 15 days ago

    Likely audience: Book buyers

  2. 2
    Lena Gibson8K subscribers

    SubstackMonthly or less · last post 11 days ago

    Likely audience: Romance novel readers

  3. 3
    Aubrey Campbell's Newsletter—

    Substacklast post Jun 27, 2025

    Likely audience: Kindle Unlimited subscribers

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