skills/sales-buttondown/SKILL.md
Buttondown platform help — newsletter publishing, paid subscriptions via Stripe, automations, subscriber management, tags, RSS-to-email, custom domains, Markdown editor, CLI, REST API. Use when Buttondown emails aren't sending, paid subscriptions not working, automation not triggering, subscribers not importing, Stripe payments failing, custom domain not resolving, API calls returning errors, or migrating to Buttondown from another platform. Do NOT use for cross-platform email marketing strategy (use /sales-email-marketing), newsletter monetization strategy (use /sales-newsletter), audience growth strategy (use /sales-audience-growth), or cross-platform deliverability (use /sales-deliverability).
npx skillsauth add sales-skills/sales sales-buttondownInstall 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.
Ask the user:
What area of Buttondown do you need help with?
/sales-newsletter {your question})What plan are you on?
Skip-ahead rule: if the user's prompt already contains enough context, skip to Step 2.
| If the question is about... | Hand off |
|---|---|
| Email marketing strategy across tools | "This is an email marketing strategy question — run: /sales-email-marketing {your question}" |
| Newsletter monetization strategy | "This is a newsletter monetization question — run: /sales-newsletter {your question}" |
| Growing your subscriber list | "This is an audience growth question — run: /sales-audience-growth {your question}" |
| Deliverability, SPF/DKIM/DMARC | "This is a deliverability question — run: /sales-deliverability {your question}" |
| Connecting Buttondown to other tools | "This is a tool integration question — run: /sales-integration {your question}" |
Answer directly when the question is Buttondown-specific — platform config, UI navigation, API usage, Stripe setup, add-on features.
Read references/platform-guide.md for the full platform reference — modules, pricing, integrations, data model, workflows.
Answer the user's question using only the relevant section. Don't dump the full reference.
You no longer need the platform guide — focus on the user's specific situation.
Provide step-by-step instructions with:
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.
Most features are paid add-ons — tagging, analytics, paid subscriptions, automations, and RSS-to-email each cost $9-$29/mo extra on top of the base plan. Don't assume a feature is available — check which add-ons the user has enabled.
Sending limit assumes daily max — pricing is based on sending at most one email per day to your entire subscriber base. If you need higher frequency, contact Buttondown for custom pricing.
Automations add-on is $29/mo — unlike Kit or Mailchimp where automations are included, Buttondown charges separately. Welcome sequences require this add-on.
API is available on all plans including free — unlike many competitors, even free-tier users can use the full REST API. Auth is Authorization: Token {key} with base URL https://api.buttondown.com/v1/.
Concierge migration is free — Buttondown migrates your subscriber list from any platform at no cost, usually within one business day. Don't try to do complex migrations manually.
/sales-newsletter — Newsletter monetization strategy (paid subscriptions, sponsorships, premium tiers)/sales-email-marketing — Cross-platform email marketing strategy (broadcasts, automation, segmentation)/sales-audience-growth — Audience growth strategy (lead magnets, cross-promotion, referral programs)/sales-deliverability — Cross-platform deliverability (SPF/DKIM/DMARC, warmup, inbox placement)/sales-kit — Kit (formerly ConvertKit) platform help — direct competitor/sales-ghost — Ghost platform help — newsletter + publishing alternative/sales-mailerlite — MailerLite platform help — affordable newsletter alternative/sales-digital-products — Selling digital products alongside your newsletter/sales-integration — Connect Buttondown to CRM and other tools via API, Zapier, webhooks/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: "How do I charge for my newsletter on Buttondown?" Skill does: Walks through enabling the Paid Subscriptions add-on, connecting Stripe, configuring pricing tiers, and setting up paywalled content with the paywall toggle Result: User has a working paid newsletter with Stripe payments
User says: "I want to move my 2,000 subscribers from Substack to Buttondown" Skill does: Recommends using Buttondown's free concierge migration service, explains what transfers (subscribers, archives), flags what doesn't (Substack-specific features like Notes), and covers domain authentication setup Result: User has a migration plan with zero subscriber loss
User says: "I want to automatically add subscribers from my app to Buttondown" Skill does: Provides the POST /v1/subscribers endpoint with auth header, request body format, and example cURL/Python code. Covers tag assignment and metadata fields Result: User has working API integration code
Symptom: Paywall is enabled but readers can't pay or see no payment option Cause: Stripe not connected, or Paid Subscriptions add-on not enabled Solution: Go to Settings → Paid Subscriptions, verify the add-on is active ($9/mo), and check Stripe connection status. Test with a Stripe test-mode payment. Ensure the email has the paywall toggle enabled.
Symptom: Email shows as draft but won't send, or scheduled send didn't fire Cause: Email may be flagged by Buttondown's built-in checks (broken links, malformed images), or sending domain not verified Solution: Check the email's status page for warnings. Verify your sending domain in Settings → Domains. If using a custom domain, confirm DNS records (SPF/DKIM) are propagated.
Symptom: Imported a CSV but subscriber count didn't change Cause: CSV format issues, duplicate emails, or import still processing Solution: Check import status in Subscribers → Imports. Verify CSV has a column header named "email" (case-sensitive). Duplicates are silently skipped. Large imports may take several minutes.
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.