Duckbill newsletter sponsorships

NewsletterFIT detected Duckbill sponsoring 1 newsletter in 1 post over the last 12 months, first on Aug 6, 2026. Newsletters it has sponsored include Claude Marketers. The most recent placement was in Claude Marketers on Aug 6, 2026. Its placements cluster around AI agents, Marketing automation and advertising technology.

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Newsletters
1
sponsored in the last 12 months
Placements
1
posts with a detected sponsorship
First detected
Aug 6, 2026
in indexed posts
Last seen
Aug 6, 2026
Claude Marketers

Placements per month

2025-11 2026-10

Newsletters Duckbill has sponsored

  1. Claude Marketers 16K subscribers

    Substack Weekly · last post 20 days ago

    Likely audience: Startup founders

    1 placement · last Aug 6

Similar newsletters where Duckbill hasn't been detected

Active newsletters on the same topics that already carry sponsors. Useful for finding where a brand like this could go next, or where a competitor isn't yet.

  • One more Thing in AI 900K subscribers

    beehiiv Weekly · last post 18 days ago

    Likely audience: AI developers

    Sponsored by Date

  • The Neuron 700K subscribers

    beehiiv Several times a week · last post 17 days ago

    Likely audience: Product managers

    Sponsored by Front, Dell Technologies

  • AI Blueprint 236K subscribers

    Substack Weekly · last post 13 days ago

    Likely audience: AI researchers

    Sponsored by HubSpot

  • Ben's Bites 172K subscribers

    Substack Several times a week · last post 14 days ago

    Likely audience: AI developers

    Sponsored by Google, AWS, Adobe

  • Rich on Tech 75K subscribers

    Substack Several times a week · last post 15 days ago

    Likely audience: Tech enthusiasts

    Sponsored by Incogni, Surfshark

  • FounderCoHo 67K subscribers

    Substack Every two weeks · last post 22 days ago

    Likely audience: AI researchers

    Sponsored by DeepVista AI

  • AI Agents Simplified 58K subscribers

    Substack Weekly · last post 14 days ago

    Likely audience: ML engineers

    Sponsored by HubSpot, CircleCI, EZ Texting

  • GTM Strategist 36K subscribers

    Substack Weekly · last post 15 days ago

    Likely audience: Growth marketers

    Sponsored by Cello, Miro, Swan AI

Recent placements

  • linkedin added… Claude Marketers

    “winners from here are those that have been using ai to ideate and refine their human-written ideas. Claude Marketers is brought to you by Du”

Detected automatically from posts with explicit sponsorship markers ("sponsored by", "brought to you by" and similar). Detection can miss placements or misread them. Updated Oct 30, 2026 · methodology · all sponsors