Best Middle Grade Fiction Newsletters in 2026

NewsletterFIT tracks 4 newsletters that cover Middle grade fiction as a primary topic, 3 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are morganwylie (3K).

Updated Nov 11, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    morganwylie3K subscribers

    SubstackMonthly or less · last post 56 days ago

    A USA Today bestselling and award-winning author of YA fantasy and speculative fiction. Her work explores imagination, identity, and transformation, both within story and beyond it. Step through the doorway and into the…

    Likely audience: Book lovers

  2. 2

    SubstackMonthly or less · last post 19 days ago

    Advice and bookish news from literary agent and author Eric Smith.

    Likely audience: literary agents

  3. 3

    SubstackMonthly or less · last post 10 days ago

    From recent posts: The author shares her summer plans, including finishing her Grimm Trilogy and seeking beta readers for plot and character consistency. She announces the release of her middle-grade novel 'I'd Rather Date Bonkers' on Jul…

    Likely audience: Aspiring authors

  4. 4

    Substacklast post Jun 23, 2023

    Adi's cats. And books. Also writing stuff.

    Likely audience: Middle grade authors

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