conversion optimization newsletters

NewsletterFIT tracks 9 newsletters that cover conversion optimization as a primary topic, all with posts in the last 90 days. By publicly shown subscriber count, the largest are Marketing Ideas (112K), Julián Castañeda (86K) and Write • Build • Scale (44K). Brands detected sponsoring these newsletters recently include Botsi, Gumloop and Weglot.

Updated Oct 29, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Marketing Ideas 112K subscribers

    Substack Weekly · last post 14 days ago

    Likely audience: Product managers

    Sponsors detected: Gumloop, Ahrefs, AdKit

  2. 2
    Julián Castañeda 86K subscribers

    Substack Every two weeks · last post 17 days ago

    Likely audience: Business owners

  3. 3
    Write • Build • Scale 44K subscribers

    Substack Every two weeks · last post 20 days ago

    Likely audience: Content strategists

  4. 4
    Pierre's Content Guides 35K subscribers

    Substack Every two weeks · last post 20 days ago

    Likely audience: B2B marketers

    Sponsors detected: Weglot

  5. 5
    Brand Tribe 24K subscribers

    Substack Weekly · last post 20 days ago

    Likely audience: Brand managers

  6. 6
    The Digital Creator 18K subscribers

    Substack Every two weeks · last post 17 days ago

    Likely audience: SaaS founders

    Sponsors detected: Outrank

  7. 7
    Retention.Blog 2K subscribers

    Substack Every two weeks · last post 23 days ago

    Likely audience: Product managers

    Sponsors detected: Botsi

  8. 8
    Digital Marketing —

    LinkedIn Every two weeks · last post 15 days ago

    Likely audience: B2B marketing managers

  9. 9
    OTA Partner Intelligence —

    LinkedIn Every two weeks · last post 10 days ago

    Likely audience: OTA founders

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