The Best Sponsorship Management Tools

Manage your sponsorship slots and inventory in one place with these tools.

🏪 Marketplace

💻 Programmatic Ads

📁 Sponsorship Management

📑 Market Research

Sponsy

Sponsorship manager for newsletters

sponsorship

Passionfroot

Supercharge your sponsorships

sponsorship

Booker by Paved

Automate newsletter sponsorships directly from your website

sponsorship

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👩‍🏫 Learn all about newsletters Every week we share resources for newsletter creators and recommended newsletters.

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Blog Posts

Email Deliverability for Newsletter Creators: The Full Guide to Reaching the Inbox

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.

The State of Newsletters In 2025

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!

What's New in InboxReads - April 2025

There's been a lot of big new features added to InboxReads in the past few months that you might have seen while browsing the website. You can now track your newsletter's ranking over time, share your favourite newsletter tools, save searches, and more!

Operators are moving to LetterBucket. Discover why Promoted