AGENT SKILLBY GOOSEWORKS-AI
Sponsored newsletter finder
AT A GLANCE
Sponsored newsletter finder is an agent skill for email. Find newsletters your ICP reads, evaluate their audience fit, and produce a ranked shortlist ready for outreach. The gooseworks-ai/goose-skills repository on GitHub, maintained by gooseworks-ai, has 912 stars and the MIT license. To add it, run npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder
- SOURCE REPOSITORY
- gooseworks-ai/goose-skills (opens GitHub in a new tab)
- REPO STARS
- SOURCE REPOSITORY
- LICENSE
- MIT
- CATEGORIES
- SKILL.MD SIZE
- 6.3 KB192 LINES
QUICK ANSWER
- WHAT IT IS01
- Find newsletters your ICP reads, evaluate their audience fit, and produce a ranked shortlist ready for outreach. It stands out by giving email marketing a defined shape, so the agent asks for better context and returns a more usable result.
- INPUTS02
- Context for email marketing: your goals, audience, constraints, and any source material the skill asks for.
- OUTPUT03
- A ready-to-use result for email marketing: the analysis, copy, or recommendations the agent produces.
INSTALL
One command adds this skill from its source repository.
npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finderREAD THE SKILL.MD BELOW BEFORE YOU RUN IT. SKILLS INSTRUCT YOUR AGENT.
SKILL.MD
The full file, as published in the source repository. Copy it, download it or open it on GitHub.
ON THIS PAGE · 12
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.
When to Use#
- "Find newsletters I can sponsor to reach [ICP]"
- "What newsletters does my target audience read?"
- "I want to test newsletter sponsorship — where should I start?"
- "Give me a ranked list of newsletters for [industry/role]"
Phase 0: Intake#
- ICP definition — Target title, industry, company stage (e.g., "VP of Sales at Series A-C B2B SaaS companies")
- Monthly budget — Rough range for sponsorships (e.g., "$1,000-3,000/month")
- Geography — US only, global, or specific region?
- Campaign goal — Awareness (brand mention) or direct response (signup/demo)?
- Any newsletters you're already subscribed to or know about in this space? (Seeds the search)
Phase 1: Discovery via Web Search#
Search for newsletters using multiple angles:
Search Queries to Run#
"[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.directoryfor category browsingpaved.comfor sponsorship marketplace listingsswapstack.cofor newsletter ad networksparkloop.cofor referral partnerships
Collect: newsletter name, URL, estimated subscribers, topics covered, sponsorship page URL if found.
Phase 2: Evaluate Each Newsletter#
For each discovered newsletter, score across 5 dimensions (1-5 each):
Scoring Criteria#
| 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.
Data Points to Find for Each Newsletter#
Search for:
- Subscriber count (often on the "About" or "Advertise" page)
- Open rate (sometimes disclosed, often ~40-50% for niche newsletters)
- CPM or flat sponsorship rate
- Audience demographics (if disclosed)
- Past sponsors (who's already buying? = validation)
- Send frequency (weekly, daily, etc.)
For newsletters with no pricing page, estimate CPM from industry benchmarks:
- Micro (<5k subs): $50-150 flat rate
- Small (5k-20k subs): $100-500 flat rate
- Mid (20k-50k subs): $500-2,000 flat rate
- Large (50k+ subs): $1,000-10,000 flat rate
Phase 3: Competitive Intelligence#
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.
Phase 4: Output Format#
# 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 newsletter-sponsors-[YYYY-MM-DD].md in the current working directory (or user-specified path).
Cost#
| Component | Cost |
|---|---|
| Web search (discovery phase) | Free |
| All analysis and scoring | Free (LLM reasoning) |
| Total | Free |
Tools Required#
- web_search — for newsletter discovery and verification
- No API keys required
Trigger Phrases#
- "Find newsletters I can sponsor to reach [ICP]"
- "What newsletters does [title/industry] read?"
- "Run newsletter sponsorship research for [client]"
- "I want to test paid newsletter distribution — where should I start?"
FAQ
07 QUESTIONS
01What is the Sponsored newsletter finder agent skill?
Find newsletters your ICP reads, evaluate their audience fit, and produce a ranked shortlist ready for outreach. It is listed under email in the 100xLab agent skills directory.
02How do I install Sponsored newsletter finder in Cursor, Claude Code, or Codex?
Run npx skills add gooseworks-ai/goose-skills --skill sponsored-newsletter-finder in the project where you want it, then ask your agent for the skill by name. The --skill flag installs only Sponsored newsletter finder, not every skill in the repository.
03What does the Sponsored newsletter finder SKILL.md cover?
The SKILL.md includes sections on When to Use, Phase 0: Intake, Phase 1: Discovery via Web Search, Search Queries to Run, Phase 2: Evaluate Each Newsletter and Scoring Criteria. Read the full text on this page or in plain markdown at /resources/agent-skills/gooseworks-ai-goose-skills--sponsored-newsletter-finder--10onfww/raw.
04Which agents can use Sponsored newsletter finder?
Sponsored newsletter finder installs with the cross-agent skills installer (npx skills add), which sets it up for agents such as Claude Code, Cursor and Codex. Each agent loads the SKILL.md when you ask for the skill by name.
05What license is Sponsored newsletter finder under?
The gooseworks-ai/goose-skills repository declares the MIT license. Read the license file in the repository before you copy or redistribute the skill.
06Is Sponsored newsletter finder free to use?
Reading, copying and installing Sponsored newsletter finder costs nothing: it is published in a public GitHub repository under the MIT license. Reuse and redistribution follow that license.
07Where is the source of Sponsored newsletter finder?
Sponsored newsletter finder comes from https://github.com/gooseworks-ai/goose-skills, which has 912 GitHub stars. The SKILL.md is at https://github.com/gooseworks-ai/goose-skills/blob/HEAD/skills/ads/composites/sponsored-newsletter-finder/SKILL.md. The author is gooseworks-ai.
Need an agent workflow built around your stack?
Tell us the workflow you want automated. We reply within 4 working hours (IST).
ATTRIBUTION
Sponsored newsletter finder was written by its original authors and is published in gooseworks-ai/goose-skills (opens GitHub in a new tab) under the MIT license. All rights stay with the original authors.
100xLab did not write, maintain or endorse this skill. This page lists it for discovery. Repo stars belong to the source repository, not to the skill. Review any skill before you install it.