Best Adult Friendships Newsletters in 2026

NewsletterFIT tracks 4 newsletters that cover Adult friendships as a primary topic, all with posts in the last 90 days. By publicly shown subscriber count, the largest are Next Big App (285K), Happy on Purpose (15K) and Feeling Everything, Very Deeply (13K).

Updated Nov 7, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Next Big App285K subscribers

    SubstackWeekly · last post 9 days ago

    From recent posts: Next Big App publishes business case studies on product design, AI ethics, and marketing strategy for professionals in tech and business. The publication mixes long-form analytical articles with specific industry…

    Likely audience: Startup founders

    Sponsors detected:

  2. 2
    Happy on Purpose15K subscribers

    SubstackWeekly · last post 9 days ago

    From recent posts: Happy on Purpose publishes weekly lifestyle advice, productivity tips, and media recommendations for readers seeking personal growth and midlife happiness.

    Likely audience: Book lovers

  3. 3
    Feeling Everything, Very Deeply 13K subscribers

    SubstackMonthly or less · last post 55 days ago

    A weekly column for the girls in their 20s building their village, seeking the female friendships we were promised in the 90s sitcoms, I write about how to find your community and build your self identity

    Likely audience: adults seeking friendship

  4. 4
    Disco Dialogues—

    SubstackMonthly or less · last post 36 days ago

    A weekly newsletter to help on your journey of introspection and growth written through a contemplative lens of personal reflections and curated content.

    Likely audience: moms and parents

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