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Best Action Fiction Newsletters in 2026

NewsletterFIT tracks 3 newsletters that cover Action Fiction as a primary topic, all with posts in the last 90 days. By publicly shown subscriber count, the largest are Soaring Twenties (3K).

Updated Nov 12, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Soaring Twenties3K subscribers

    SubstackMonthly or less · last post 19 days ago

    From recent posts: Soaring Twenties publishes weekly interviews and book reviews for fans of pulp, sci-fi, and literary fiction, featuring author conversations, reader critiques, and community promotion. The content mixes conversational…

    Likely audience: Substack subscribers

  2. 2
    Upstream Reviews—

    SubstackSeveral times a week · last post 6 days ago

    REVIEWING ONLY THE BEST IN SCI-FI, FANTASY, HORROR, MYSTERY & THRILLERS

    Likely audience: Science fiction readers

  3. 3
    The Moon Talker—

    SubstackWeekly · last post 5 days ago

    A weekly serialisation of The Moon Talker, a thrilling science fiction novel. Now serialising the spin-off Lunis-One novella.

    Likely audience: Sci-fi readers

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