The all-in-one newsletter sponsorship platform

Subletter.io is the most comprehensive platform to sponsor newsletters, monetize your own newsletter with sponsored content, and much more.

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Advertise in newsletters

Grow your business by sponsoring over 3,000 of the most-read newsletters across more than 500 niches, and reach highly qualified readers.

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Monetize your newsletter

Join over 2,000 creators, media companies, and publishers who use Subletter to generate consistent, scalable revenue from their newsletters.

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Acquire newsletters

Grow your business through newsletter acquisitions — verify audience quality, find the ideal price, and make acquisitions in just a few clicks.

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Grow your email list with Optins

Opt-in Campaigns are designed to help you grow your mailing list with verified, high-intent subscribers. Your ad appears inside carefully selected newsletters, and readers can subscribe to your list instantly through our One-Click Opt-In feature — no form, no friction.

You only pay for the number of new subscribers who actively join your list, guaranteeing measurable and authentic results.

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Get more qualified visitors to your website

With Click Campaigns on Subletter, your ad is displayed inside newsletters read by engaged audiences in your industry.

You only pay for qualified and unique clicks — meaning real readers who are genuinely interested in your offer. Your ad is shown exclusively to the most relevant readers of each newsletter, ensuring that every click drives high-quality traffic to your website.

Advertise in 3,000 newsletters

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Create your ad content

Create your ad content with a simple editor — add a title, text, an image, and a button with a link to redirect readers to the webpage of your choice.

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Set a budget

Your budget will then be allocated to your campaign and will only be spent when you receive clicks or leads.

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Select newsletters

Select newsletters by filtering through languages and categories — your ad will only be displayed in those newsletters, targeting reader segments that best match your audience.

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Target with precision

Choose exactly who sees your ad — by audience category, country, or language. Your message will appear only in front of the readers that truly matter, across the newsletters you select to sponsor.

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New Advertiser Deal - Last Day

Pay $500 and get $1,000 in additional ad credits — directly available for your first campaign to sponsor the newsletters of your choice.

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Used by over 2,000 newsletter creators to grow their audience and monetize through sponsorships

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Manager.dev

Over 27,000 subscriber

By Anton Zaides

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La recette d'une LOVE Brand

Over 5,000 subscribers

By Alex Rafaitin

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Fintech Blueprint

Over 110,000 subscribers

By Lex Sokolin

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The Influential Project Manager

Over 3,000 subscribers

By Kyle Nitchen

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The European VC

Over 29,000 subscribers

By David Cruz e Silva

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Engineering Leadership

Over 70,000 subscribers

By Gregor Ojstersek

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MKT1

Over 63,000 subscribers

By Emily Kramer

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The Pareto Investor

Over 19,000 subscribers

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BuildMode

Over 99,000 subscribers

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Product Growth

Over 129,000 subscribers

By Aakash Gupta

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Future AI

Over 74,000 subscribers

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Profit Snack

Over 110,000 subscribers

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Future Blueprint

Over 47,000 subscribers

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Think Newsletter

Over 10,000 subscribers

Follow us on Facebook
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MRR Unlocked

Over 5,500 subscribers

By Alexander Estner

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Scott's Newsletter

Over 230,000 subscribers

By Scott Clary

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Resilient Cyber

Over 40,000 subscribers

By Chris Hughes

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Ms. Anti Work

Over 30,000 subscribers

By Gabrielle Judge

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Accelerate your growth

Advertise on newsletters
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Monetize your audience

Publish and earn by featuring sponsors in your newsletter.
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Expand your brand

Generate growth by acquiring newsletters
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