Discover newsletters in a target niche relevant to your ICP, evaluate audience fit, estimate reach and CPM, and output a ranked shortlist of sponsorship opportunities. Uses web search to find newsletters, then scores each against ICP alignment criteria. Use when a marketing team wants to reach an existing engaged audience for less than the cost of building their own, or when testing a new channel before committing.
npx gooseworks install --claude # Then in your agent: /gooseworks <prompt> --skill sponsored-newsletter-finder
Find newsletters your ICP reads, evaluate their audience fit, and produce a ranked shortlist ready for outreach. Cheaper and faster than building your own list from scratch — newsletters already have the trust and the audience.
Best for: Seed/Series A teams with $500-5,000/month to test a paid distribution channel. Not for companies without budget or companies targeting a mass-market ICP.
Search for newsletters using multiple angles:
"[ICP industry] newsletter" sponsorship
"[ICP role] newsletter" site:substack.com OR site:beehiiv.com
"best newsletters for [ICP role/industry]"
"[ICP industry] newsletter" "advertise" OR "sponsor"
"[competitor company] newsletter sponsorship" (find where competitors are already advertising)
newsletter directory "[ICP industry]"Also search curated newsletter directories:
newsletter.directory for category browsingpaved.com for sponsorship marketplace listingsswapstack.co for newsletter ad networksparkloop.co for referral partnershipsCollect: newsletter name, URL, estimated subscribers, topics covered, sponsorship page URL if found.
For each discovered newsletter, score across 5 dimensions (1-5 each):
| Dimension | 1 | 3 | 5 |
|---|---|---|---|
| Audience match | Unrelated audience | Partial overlap | Direct ICP match |
| Reach | <1,000 subscribers | 5,000-20,000 | 20,000+ |
| Engagement | No open rate data | ~30-40% open rate | 40%+ open rate |
| Niche specificity | Generic business newsletter | Industry newsletter | Role-specific newsletter |
| Sponsor accessibility | No sponsor info found | Inquiry required | Clear pricing / marketplace listing |
Total score: /25. Shortlist newsletters scoring ≥ 15.
Search for:
For newsletters with no pricing page, estimate CPM from industry benchmarks:
Check if known competitors are sponsoring newsletters in this space:
Search: "[competitor name]" "sponsored by" newsletter
Search: "[competitor name]" advertisement site:substack.comIf a competitor is sponsoring a newsletter, it's validated audience fit — flag it as high priority.
# Newsletter Sponsorship Shortlist — [DATE]
ICP: [description] | Budget: [range] | Goal: [awareness/direct response]
---
## Tier 1 — High Priority (Score 20-25)
### 1. [Newsletter Name]
- **URL:** [url]
- **Subscribers:** [N] (~[source])
- **Open rate:** [X%] (disclosed/estimated)
- **Audience:** [description]
- **Send frequency:** [weekly/daily/etc]
- **Sponsorship type:** [dedicated / classified / banner mention]
- **Estimated cost:** $[X] per send
- **Estimated CPM:** $[X]
- **Past sponsors:** [list — competitive validation]
- **Score:** [X/25]
- **Fit rationale:** [1-2 sentences on why this is a strong match]
- **Sponsor page:** [url or "inquiry required"]
### 2. [Newsletter Name]
...
---
## Tier 2 — Worth Testing (Score 15-19)
### 1. [Newsletter Name]
...
---
## Tier 3 — Watchlist (Score 10-14)
(Monitor these — audience fit is good but reach or accessibility is limited)
---
## Where Competitors Are Already Advertising
| Newsletter | Competitor | Notes |
|-----------|-----------|-------|
| [Name] | [Competitor] | Validated ICP match |
...
---
## Budget Allocation Recommendation
Given budget of [X]/month and campaign goal of [goal]:
| Newsletter | Send frequency | Cost per send | Sends/month | Monthly cost |
|-----------|---------------|--------------|-------------|-------------|
| [Name] | Weekly | $[X] | 4 | $[X] |
| [Name] | Bi-weekly | $[X] | 2 | $[X] |
| **Total** | | | | $[X] |
**Recommended test:** Start with [Newsletter 1] for 2 sends to validate conversion rate before expanding.
---
## Outreach Templates
### Cold outreach to newsletter with no sponsor page:
Subject: Sponsoring [Newsletter Name] — [Your Company]
> Hi [Name],
>
> I'm [Name] from [Company] — we [one-line pitch]. We're fans of [Newsletter Name] and think our audience overlap is strong: [ICP match rationale].
>
> Would you be open to a sponsored mention or dedicated send? Happy to share what we're looking for and see if it's a fit.
>
> [Name]
### Request for media kit:
> Hi [Name] — big fan of [Newsletter Name]. Could you share your media kit and current sponsorship rates? [Your Company] is evaluating newsletter partnerships for Q[X].Save to clients/<client-name>/intelligence/newsletter-sponsors-[YYYY-MM-DD].md.
| Component | Cost |
|---|---|
| Web search (discovery phase) | Free |
| All analysis and scoring | Free (LLM reasoning) |
| Total | Free |
newsletter.directory for category browsingCheck and improve your brand's visibility across AI search engines (ChatGPT, Perplexity, Gemini, Grok, Claude, DeepSeek). Set up tracking, run visibility analyses, audit your website for AI readability, and get actionable recommendations. Uses the npx goose-aeo@latest CLI.
Extract competitor and customer intelligence from any company's landing page HTML. Discovers tech stack, analytics tools, ad pixels, customer logos, SEO metadata, CTAs, hidden elements, and more. No API keys required.
Discover all customers of a given company by scanning websites, case studies, review sites, press, social media, job postings, and more. Use when you need competitive intelligence on who a company sells to.