SponsorGap - Find Newsletter Sponsors

The intelligence gap

Brands are spending. Most creators never find out.

Every week, brands allocate newsletter sponsorship budgets. Without intelligence you're guessing who to pitch. With SponsorGap you see spend trends, ad frequency, and verified contacts — in real time.

Active this week

Kalshi

Finance · sponsors Horizon AI

↑ Currently spending

New entrant

Attio

Software · sponsors What Did OpenAI Do This Week?

Fresh budget

Your competitor

Greenfield Robotics

Agritech · sponsors Carbon Finance

↑ Gap opportunity

Verified contact

Unitree

Robotics · sponsors The Signal

↑ Decision-maker found

Try it live

Search any brand or niche live

Search by niche, industry, or company name — instantly see brands actively buying newsletter sponsorships. No sign-up needed.

Try:

Live data · first 3 results free

Unlock full database →

For creators

Everything you need to land the deal

Sponsor discovery

Tell us your niche and audience size. Our engine surfaces brands actively sponsoring similar newsletters — ranked by spend trajectory and fit score.

GPT-powered matchingNiche filters

Competitor monitoring

Track which brands sponsor your direct competitors. Get notified when a new one appears — so you reach out while the budget is fresh.

Real-time alertsSpend trends

Verified contacts

Skip generic inboxes. Reach the growth or partnership manager who controls the budget — with verified email and LinkedIn included.

Decision-maker dataEmail + LinkedIn

Funding radar

Companies that just raised have fresh marketing budgets. We surface them the day they announce — before anyone else pitches them.

VC-raise alertsFirst-mover edge

SponsorGap has helped us find multiple newsletter partners over the last couple months. The platform is intuitive and the data is incredibly valuable.

Max · Chief of Staff at Houck's Newsletter

Everything included

One platform. Every tool you need.

The full intelligence stack — from discovering who's spending to closing the deal and tracking results.

Intelligence & Data

Sponsor database25k+ brands with ad history, spend signals & contacts

Trend insightsTrending brands, topics & industries by week

Brand profilesFull spend history, newsletters sponsored, ad frequency

Funding radarCompanies that just raised — ready to spend on marketing

Industry heatmapsSee which niches have the most sponsor activity

Tracking & Monitoring

Newsletter timelineTrack any newsletter's full sponsorship history on a visual timeline

Competitor monitoringGet alerted when a brand sponsors a competing newsletter

Spend trend graphsSee if a brand's ad spend is growing, stable or declining

Real-time alertsInstant notifications for new sponsorships in your niche

WatchlistSave brands to track and get notified when they become active

Outreach & Marketplace

Verified contactsDirect email & LinkedIn of the person who controls the budget

Outreach pipelineTrack your pitches — contacted, replied, negotiating, closed

Ad marketplaceList your open ad slots and get inbound inquiries from brands

Ad copy libraryBrowse real ads from newsletters in your niche for inspiration

Sponsor calendarSee upcoming ad slot availability across the ecosystem

Reports, API & Team

Custom reportsBuild and export sponsor reports by niche, period or competitor

CSV & bulk exportDownload full sponsor lists filtered by any criteria

Full API accessIntegrate sponsor data directly into your own tools & workflows

Invite team membersCollaborate with your sales team or VA inside your account

Weekly digestAutomatic weekly email with new sponsors in your saved niches

Claude AI integration

Research sponsors inside Claude

Connect SponsorGap to Claude as an MCP server. Ask plain-English questions about brands, niches, and budgets — without leaving your AI workflow.

Generate your API key

Go to Settings → API Keys in your SponsorGap account and create a key.

Add the MCP server in Claude

Open Claude Settings → Integrations and add a new MCP server:

https://sponsorgap-mcp-cc7ac08f6c89.herokuapp.com/mcp

Authenticate with your key

Claude will redirect you to enter your SponsorGap API key. Paste it in and connect.

Ask anything about sponsors

Start a conversation in Claude and ask about brands, niches, or competitors naturally.

Pro planBusiness plan

Read the full setup guide →

Example prompts

Which SaaS brands are actively sponsoring fintech newsletters?

Find sponsors in the AI tools niche with a growing budget

What brands recently raised funding and are buying newsletter ads?

Show me sponsors similar to Notion or Linear

Which newsletters does Stripe sponsor most frequently?

Brands in the database

Kalshi

Attio

Greenfield Robotics

Unitree

Reflect

Cowork

HubSpot

Cakes

1of10

Mercury

WorkOS

PostHero

Olly Richards

The Crossword Club

Serious Skincare

EnergySage

Vantor

Huel

Delta Air Lines

Bitcoin Affairs

Weights & Biases

Vanta

Synthesia

Pulley

Panakes Partners

Climentum Capital

B Capital

Paradigm

Polymarket

Legacy GRC

Gladly

Granola

Working Smarter

Nocturnal Skincare

Granola

Templum Capital

Salesforce for Small Business

Uncapped

EnergyX

MarketBeat

+ 52k more

Pricing

Straightforward. No surprises.

Starter

$39 / month

For creators who want to start finding and pitching sponsors.

Full sponsor database

Niche & industry filters

Sponsor activity feed

Ad slot scanner

Basic search & sort

7-day free trial

Stop guessing. Start closing.

Join 3133 newsletter creators who found their next sponsor with SponsorGap.

Start for free — no card needed

Find the brands already spending in your niche

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