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The Best Sponsorship Research and Data Tools

Discover potential sponsors by looking at where they already advertise and get their contact info.

  • 🏪 Marketplace
  • 💻 Programmatic Ads
  • 📁 Sponsorship Management
  • 📑 Market Research
  • 💬 Messaging

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Sponsorgap

Finding the right sponsor just got easier.

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Who Sponsors Stuff

Find your next newsletter sponsor

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Appearedin

The deal engine for newsletter sales teams.

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NewsletterFit

Compare newsletter platforms by pricing.

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InboxReads Pro

Unlock Advanced Newsletter Insights

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Radar Lab by Partnership Intel

Which brands sponsor which newsletters

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Get a 14-day trial + 20% OFF for 3 months.

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Deliverability is what turns writing effort into actual reach. It is the invisible system that determines whether your subscribers receive your newsletter where it matters most.

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This is the 6th annual State of Newsletters report. If it's your first one, these reports are based on the newsletters submitted to InboxReads and data from our user base.

What's New in InboxReads - November 2025

Create personal newsletter collections, add sponsorship links & multiple images, and bring your entire team.

What's New in InboxReads - September 2025

InboxReads now lets you export newsletter data to plug into your own software, view competitor metrics, and more!

Get a 14-day trial + 20% OFF for 3 months. Promoted

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