skills/sales-sponsorthis/SKILL.md
Sponsor This Newsletter platform help — curated Airtable database of 530+ newsletters ready for sponsorships, with subscriber stats, ad pricing, and cross-promotion openness indicators for startup founders. Use when you want to find newsletters to sponsor your product, need a curated list of newsletters that accept ads sorted by niche and subscriber count, unsure whether Sponsor This Newsletter is worth buying vs using Reletter or Paved for newsletter discovery, trying to figure out which newsletters are open to cross-promotion or affiliate deals, or want to compare newsletter ad prices before reaching out. Do NOT use for general newsletter monetization strategy (use /sales-newsletter) or finding sponsors for your newsletter (use /sales-sponsorgap or /sales-sponsorleads).
npx skillsauth add sales-skills/sales sales-sponsorthisInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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If references/learnings.md exists, read it first for accumulated platform knowledge.
What are you trying to do?
What's your product niche? (e.g., SaaS, fintech, health, dev tools)
What's your budget per newsletter placement? (e.g., $50, $200, $500+)
Skip-ahead rule: if the user's prompt already contains enough context, skip to Step 2.
| If the question is about... | Route to... |
|---|---|
| Newsletter monetization strategy (you're a publisher wanting revenue) | /sales-newsletter [question] |
| Finding sponsors for YOUR newsletter | /sales-sponsorgap [question] or /sales-sponsorleads [question] |
| Newsletter sponsorship marketplace (programmatic ad buying) | /sales-paved [question] |
| Searching 7M+ newsletters with API access | /sales-reletter [question] |
| Growing your subscriber list | /sales-audience-growth [question] |
If the question is Sponsor This Newsletter-specific, continue to Step 3.
Read references/platform-guide.md for the full platform reference — database contents, filtering workflow, pricing, comparison with alternatives, and outreach tips.
Answer the user's question using only the relevant section. Don't dump the full reference.
Focus on the user's specific situation:
If you discover a gotcha, workaround, or tip not covered in references/learnings.md, append it there.
Best-effort from research — review these, especially items about plan-gated features and integration gotchas that may be outdated.
/sales-newsletter — Newsletter monetization strategy (paid subscriptions, sponsorships, ad sales, pricing)/sales-reletter — Reletter newsletter search engine (7M+ publications, subscriber data, creator contacts, API)/sales-paved — Paved newsletter sponsorship marketplace, Ad Network, Booker, Radar/sales-sponsorgap — SponsorGap sponsor intelligence (38K+ brands, verified contacts, competitor monitoring, spend trends, API)/sales-sponsorleads — SponsorLeads sponsor lead lists (4,318+ companies, decision-maker contacts, Airtable database)/sales-whosponsorsstuff — Who Sponsors Stuff sponsor intelligence (8,000+ sponsors, ad creative screenshots, decision-maker contacts)/sales-hecto — Hecto newsletter advertising marketplace (self-serve, transparent pricing, direct creator messaging)/sales-lettergrowth — Lettergrowth cross-promotion directory (1,300+ newsletters, free)/sales-do — Not sure which skill to use? The router matches any sales objective to the right skill. Install: npx skills add sales-skills/sales --skill sales-doUser says: "I have a project management SaaS and want to find newsletters to advertise in. Budget is $200/placement." Skill does: Explains how to filter the Airtable database by niche (productivity, SaaS, project management), sort by open rate and price, recommends starting with 3-5 test placements, suggests verifying stats before booking Result: User has a shortlist of relevant newsletters to pitch with a testing strategy
User says: "Should I buy Sponsor This Newsletter or just use Reletter?" Skill does: Compares database size (530 vs 7M), pricing (one-time vs $49/mo), features (curated + stats vs API + monitoring), recommends Sponsor This Newsletter for quick curated start and Reletter for comprehensive search with automation Result: User picks the right tool for their workflow
User says: "How do I get Sponsor This Newsletter data into my outreach tool?" Skill does: Walks through Airtable CSV export, field mapping for outreach tools (newsletter name, contact, subscriber count, price), recommends verifying contact info before importing, suggests personalizing outreach based on the newsletter's content niche Result: User has a pipeline from the database to their cold outreach tool
Symptom: Open rates or subscriber counts in the database don't match the newsletter's current claims Cause: The database is a one-time snapshot — newsletters grow and metrics change Solution: Before reaching out, check the newsletter's media kit or ask directly. Use the database as a discovery tool, not a source of truth for current metrics.
Symptom: Filtering returns too few or no results for your specific vertical Cause: 530 newsletters may not cover every niche — the database skews toward startup/creator/marketing topics Solution: Use Sponsor This Newsletter for initial discovery, then supplement with Reletter (7M+ publications) or Paved's marketplace for broader coverage.
Symptom: Hesitating on the one-time fee for a static database Cause: Hard to estimate ROI before seeing the data Solution: Calculate: if one $200 newsletter placement from this database drives even 50 signups, the database pays for itself. For ongoing, dynamic needs, consider SponsorGap ($39/mo) or Reletter ($49/mo) instead.
tools
UpViral platform help — viral referral marketing and list-building platform (by Emarky) for viral sweepstakes, giveaway/reward campaigns, pre-launch waiting lists, and milestone referral programs, with REST API (app.upviral.com/api/v1/), callback-URL webhooks, PHP SDK, fraud detection (IP-based suspicious-referral flagging), A/B testing, smart leaderboards, unlockable incentives, and 30+ native ESP/CRM integrations (Mailchimp, ActiveCampaign, ConvertKit, AWeber, HubSpot, Klaviyo, Intercom) plus Zapier/Make/Pipedream/Integrately/Pabbly. Use when UpViral campaigns aren't tracking referral points correctly, deciding between Starter $79/mo annual (10K leads, 1 brand, NO API) vs Business $119/mo (25K, 2 brands, API + webhooks unlocked) vs Premium $319/mo (100K, 5 brands, dedicated account manager), the API returns errors because you're on the Starter tier where API/webhooks are gated, building an UpViral→CRM or UpViral→data-warehouse pipeline with add_contact / get_leads / get_leads_points / add_points / get_custom_fields / lists methods (uvapikey + uvmethod form-encoded POST), interpreting fraud flags where same-IP referrals get marked suspicious and you must manually activate/delete/blacklist, setting up the Callback URL (webhook) to fire on reward-unlock events, Zapier New Lead / New Reward Unlocked triggers not firing, ClickFunnels/Shopify/funnel-builder integration breaking, the drag-and-drop page builder showing broken widgets or limited customization, the setup feeling long and complicated for your first campaign, or picking UpViral over Viral Loops / KickoffLabs / Vyper / Prefinery / Gleam / KingSumo / ShortStack for a viral campaign. Do NOT use for general newsletter audience growth strategy across all platforms (use /sales-audience-growth), newsletter monetization (use /sales-newsletter), KickoffLabs-specific help (use /sales-kickofflabs), no-code merge-tag newsletter referrals (use /sales-referralkit), SparkLoop paid recommendations (use /sales-sparkloop), or full-stack multi-level Level-1/2/3 referral/affiliate tracking (use /sales-referralhero).
development
ReferralHero platform help — full-stack referral, affiliate, waitlist, contest, and NPS platform with subscriber API, webhooks, Zapier, Mailchimp/Kit/AWeber/Klaviyo/ActiveCampaign/SendLane connectors, coupon codes, multi-level referral tracking (Level 1/2/3), anti-fraud, and 5,000 calls/hour rate limit. Use when ReferralHero campaigns aren't tracking referrals correctly, deciding between PRO $199/mo (10K members, includes API + webhooks) and PREMIUM $399/mo (50K members, adds ReCaptcha + SMS verification), authentication is failing with no_token or X-API-Key header is being ignored, multi-level referral counts (Level 2/3) aren't appearing for downline subscribers, coupon group endpoints return 404 or coupon arrays max out, hitting the 5,000 calls/hour soft limit and getting too_many_calls 429s, the Mailchimp/Kit native integration is double-adding subscribers, webhook payloads aren't firing on confirmation events, importing Stripe customer IDs through transaction tracking, generating reward fulfillment when subscribers cross milestone thresholds (promote/unlock_promoted_reward), comparing ReferralHero against SparkLoop/ReferralKit/Viral Loops/GrowSurf/KickoffLabs for referral marketing, or routing referral data via add_bulk_transactions (500-transaction batch limit). Do NOT use for general newsletter audience growth strategy (use /sales-audience-growth), general newsletter monetization (use /sales-newsletter), no-code newsletter-only referral with merge-tag insertion (use /sales-referralkit), SparkLoop's paid recommendations or partner network (use /sales-sparkloop), or affiliate program strategy across many platforms (use /sales-affiliate-program).
tools
KickoffLabs platform help — viral marketing platform for pre-launch waitlists, bonus-entry giveaways, milestone-reward referral programs, leaderboard giveaways, and email opt-in bribes with REST API v1 + v2, server-side webhooks (in/out), KOL.js JavaScript library, AnyForm script for custom pages, fraud detection (duplicate_ip / bounced / duplidate_email flags), SMS verification add-on, native ESP integrations (Klaviyo, Mailchimp, ActiveCampaign, Brevo), website builders (Webflow, Wix, Squarespace, Weebly), Shopify, Facebook Audiences, Slack, Zapier. Use when KickoffLabs viral campaigns aren't tracking referrals correctly, deciding between Hobby $13/mo annual (500 leads/mo no A/B no reward emails) vs Premium $48/mo (2.5K + A/B + reward emails + tracking pixels) vs Business $99/mo (10K + custom email templates + custom domains + advanced reporting + 3 team) vs Enterprise $202/mo (25K + 5 team + SMS included), API key getting rejected because you embedded it in client-side JavaScript instead of server-side, can't decide whether to use v1 /subscribe vs v2 /tags/:TAG_ID/lead for lead creation, webhook payloads firing with `__fraudulent` flag and you need to interpret the duplicate_ip/bounced/duplidate_email reason codes (yes, duplidate is spelled that way in their docs), AnyForm script not posting to KickoffLabs vs native API endpoint, leaderboard endpoint returning more than 50 leads is not allowed, social_id (kid in share URLs) attribution chain breaking between v1 and v2, contest score vs lead count metrics in the webhook payload are confusing, SMS Verification only available on Premium+ as $50/mo add-on (Enterprise includes), per-month lead cap auto-upgrades at $8 per 1000 overage leads, picking between KickoffLabs and Viral Loops / UpViral / Prefinery / ReferralCandy / Voucherify for viral campaign type fit, or rate limit per tier (10-100 calls/minute) is hitting on bulk imports. Do NOT use for general newsletter audience growth strategy (use /sales-audience-growth), general newsletter monetization (use /sales-newsletter), no-code merge-tag-only newsletter referrals (use /sales-referralkit), SparkLoop paid recommendations + partner network (use /sales-sparkloop), or full-stack referral/affiliate with multi-level Level-1/2/3 tracking (use /sales-referralhero).
development
Routes any sales, marketing, ad, or GTM objective to the right specialized skill and outputs the install command for that skill plus a ready-to-paste prompt packed with the user's context. Asks clarifying questions when the objective is ambiguous, then hands back a copy-paste-runnable next step. Covers prospecting, outbound cadences, deals, proposals, forecasting, deliverability, enrichment, intent, content, coaching, CRO, SEO, launch directories, newsletters, email/SMS/push marketing, chatbots, influencer marketing, social media, employee advocacy, media relations, reviews, data hygiene, B2B advertising, retargeting, affiliate, loyalty, digital products, memberships, webinars, checkout, and platform-specific help. Use when the user has a sales or marketing question and isn't sure which skill to use, or wants a multi-skill sequence with a batch install command. Do NOT use to solve problems directly — this skill only routes.