skills/sales-safetymails/SKILL.md
SafetyMails platform help — bulk email verification (up to 2M emails, 19-step algorithm), real-time API validation (JavaScript embed for forms), Email Finder (B2B corporate lookup), list cleaning, spamtrap/disposable/catch-all detection, integrations. Use when your email list has too many bounces, SafetyMails verification results look wrong, the JavaScript embed isn't catching bad emails on your forms, Email Finder isn't returning corporate addresses, or integrations aren't syncing verified results. Do NOT use for general deliverability strategy across tools (use /sales-deliverability), general enrichment strategy (use /sales-enrich), building prospect lists (use /sales-prospect-list), or connecting tools generically (use /sales-integration).
npx skillsauth add sales-skills/sales sales-safetymailsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Help the user with SafetyMails platform questions — from bulk email verification and list cleaning through real-time API validation, Email Finder, integrations, and credit management.
SafetyMails is a Brazil-founded email verification platform with 8,000+ customers and 2B+ emails verified. ISO 27001 certified. Core strengths: bulk list cleaning (up to 2M emails), real-time JavaScript embed for form validation, and B2B corporate email finder.
If references/learnings.md exists, read it first for accumulated knowledge.
Ask the user:
What area of SafetyMails do you need help with?
What type of verification or lookup do you need?
What's your goal? (describe your specific objective — e.g., "clean 50K contacts before a Mailchimp campaign", "add real-time validation to a WordPress form", "find emails for 200 prospects")
If the user's request already provides most of this context, skip directly to the relevant step. Lead with your best-effort answer using reasonable assumptions (stated explicitly), then ask only the most critical 1-2 clarifying questions at the end — don't gate your response behind gathering complete context.
If the request maps to a specialized skill, route:
/sales-deliverability/sales-enrich/sales-prospect-list/sales-integrationOtherwise, answer directly from platform knowledge using the reference below.
Provide guidance based on the user's area:
API documentation note: SafetyMails API docs at docs.safetymails.com are help-center style guides, not a formal REST API reference. There is no comprehensive endpoint-by-endpoint reference with request/response schemas. The primary API surface is the JavaScript embed for form validation. For programmatic bulk verification, use the web panel at panel.safetymails.com or integrations. If the user needs detailed REST API documentation, flag that it may be incomplete and recommend contacting SafetyMails support.
| Status | Meaning | Action | |---|---|---| | Valid | Email exists and is deliverable | Safe to send | | Invalid | Email does not exist or is undeliverable | Remove immediately — sending will hard bounce | | Catch-All / Accept-All | Domain accepts all addresses — cannot confirm specific mailbox | Include with caution — monitor bounce rates closely | | Disposable / Temporary | Throwaway email from services like Guerrilla Mail, Mailinator | Remove — these addresses expire quickly and indicate low-intent signups | | Spamtrap | Known spam trap address maintained by blocklist providers | Remove immediately — sending to spamtraps severely damages sender reputation and can get your domain blocklisted | | Role-Based | Generic address like info@, sales@, support@ (not a person) | Remove from prospecting lists — these go to shared inboxes, not individuals. OK for transactional email. | | Syntax Error | Malformed email address (missing @, invalid characters, etc.) | Remove — not a real email address | | Domain Error | Domain does not exist or has no MX records | Remove — domain cannot receive email |
| Feature | Details | |---|---| | Primary API surface | JavaScript embed for real-time form validation | | Auth | API key generated at panel.safetymails.com | | Docs | docs.safetymails.com (help-center style guides, not REST reference) | | Response time | <1 second for real-time validation | | Bulk verification | Via web panel upload or integrations (not a documented REST endpoint) | | Trial | 1,000 API credits free for 15 days on signup | | API access requirement | Monthly subscription plan required (not available on pay-as-you-go) |
| Integration | Type | What it does | |---|---|---| | RD Station | Marketing automation | Sync and verify contacts from RD Station | | SendGrid | ESP | Verify contacts before sending via SendGrid | | HubSpot | CRM / Marketing | Clean HubSpot contact lists | | Mailchimp | ESP | Verify Mailchimp audience lists | | ActiveCampaign | Marketing automation | Clean ActiveCampaign contact lists | | WordPress | CMS | Plugin for form validation on WordPress sites | | E-goi | Marketing automation | Sync and verify E-goi contacts | | Pipedrive | CRM | Verify Pipedrive contact emails | | Brevo | ESP | Clean Brevo (formerly Sendinblue) contact lists | | Salesforce | CRM | Verify Salesforce contact/lead emails | | Zapier | Automation | Connect SafetyMails to 6,000+ apps | | Make | Automation | Visual automation workflows with SafetyMails | | n8n | Automation | Self-hosted automation with SafetyMails | | Pabbly Connect | Automation | Workflow automation integration | | Pluga | Automation | Brazil-focused integration platform |
| Plan | Price | Credits | Notes | |---|---|---|---| | Free signup | $0 | 100 bulk + 1,000 API trial (15 days) | No credit card required | | Pay-as-you-go | From $7.50 | 1,000 credits | Credits never expire. No API access. | | Monthly subscription | From $6.80/mo | 1,000 credits | Required for API/real-time access. Also available annually ($68/yr for 1K). | | Volume (pay-as-you-go) | Tiered | Up to 2M credits | Per-credit cost decreases at higher volumes | | Volume (subscription) | Tiered | Up to 2M credits/mo | Per-credit cost decreases at higher volumes |
Credit economics:
Based on the user's specific question, provide step-by-step instructions:
Best-effort from research — review these, especially items about pricing tiers and API limitations that may have changed.
Don't assume API access comes with every plan. The real-time JavaScript API requires a monthly subscription plan. Pay-as-you-go credits do not include API access. If you only need bulk verification, pay-as-you-go works. If you need form validation or real-time checks, you must subscribe.
Don't underestimate Email Finder credit cost. At 7 credits per found email, a batch of 500 lookups can cost up to 3,500 credits. Budget accordingly. The upside: you pay 0 credits when an email is not found, and only 1 credit for risky domains.
Don't expect a full REST API reference. SafetyMails documentation at docs.safetymails.com is help-center style (guides, FAQs, how-tos), not a formal REST API reference with endpoint schemas. The primary programmatic interface is the JavaScript embed for form validation. For bulk verification, use the web panel or integrations rather than trying to build custom REST calls.
Don't send to Catch-All addresses without monitoring. Catch-All/Accept-All domains accept all emails at the SMTP level — SafetyMails cannot confirm individual mailbox existence. Including these in campaigns is a judgment call: they may be fine, or they may bounce. Monitor bounce rates closely if you include them.
Don't ignore spamtrap results. If SafetyMails flags addresses in your list as spamtraps, take it seriously. Even a single spamtrap hit can get your sending domain blocklisted. A high spamtrap rate in your list likely means the list was purchased, scraped, or hasn't been cleaned in a very long time — consider the source.
Self-improving: If you discover something not covered here, append it to references/learnings.md with today's date.
/sales-deliverability — Email deliverability strategy across tools (SPF/DKIM/DMARC, warmup, inbox placement, bounce management)/sales-enrich — Enrichment strategy across tools (waterfall enrichment, CRM hygiene, credit optimization)/sales-integration — Connect SafetyMails to CRM and other tools via Zapier, Make, or direct integrations/sales-prospect-list — Build targeted prospect lists with ICP definition and segmentation/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 25,000 contacts in Mailchimp and want to verify them before sending a product launch email" Skill does:
User says: "I want to stop fake emails from entering our HubSpot database through our demo request form" Skill does:
User says: "I have a spreadsheet with 150 names and company domains — I need to find their email addresses" Skill does:
/sales-enrich if the user also needs phone numbers, titles, or company data beyond what SafetyMails provides
Result: Verified corporate email addresses for the prospect list, ready for outreachSymptom: A large portion of your list comes back as Catch-All/Accept-All, making it hard to judge list quality Cause: Many corporate domains configure catch-all mail servers that accept all addresses — SafetyMails (and any verification tool) cannot confirm individual mailbox existence on these domains Solution: Segment catch-all results separately. For high-value prospects on catch-all domains, include them in campaigns but monitor bounce rates per-send. For bulk campaigns, consider excluding catch-all addresses to protect sender reputation. If most of your list is catch-all, the list may skew toward large enterprises — this is normal.
Symptom: JavaScript embed or API calls return authentication errors Cause: API key may be invalid, expired, or your account may be on a pay-as-you-go plan (which does not include API access) Solution: Verify your API key at panel.safetymails.com → API settings. Confirm you are on a monthly subscription plan — pay-as-you-go does not include API access. Regenerate the key if needed. Check that the key is correctly embedded in your JavaScript snippet without extra spaces or line breaks.
Symptom: Credit balance dropping faster than anticipated, especially when using Email Finder Cause: Email Finder costs 7 credits per found email (vs. 1 credit per bulk verification). Duplicate emails in uploaded lists also consume credits. Solution: Deduplicate lists before uploading to avoid paying twice for the same email. Track Email Finder usage separately — 100 successful lookups cost 700 credits. Use the free single email verifier on the SafetyMails website for one-off checks instead of spending bulk credits. Review usage reports in your dashboard to identify where credits are going.
tools
Waitlister platform help — pre-launch waitlist platform with hosted landing pages, points-based viral referrals, built-in email broadcasts, REST API, and five HMAC-signed webhook events. Use when choosing Free (100 subscribers) vs Launch $15/mo (unlimited subs, referrals + broadcasts) vs Growth $49/mo (API, webhooks, Klaviyo/Mailchimp/Kit sync, fraud detection unlock here) vs Business $129/mo, building a webhook handler that verifies X-Webhook-Signature, webhooks auto-disabled after 10 consecutive failures, API signups bypassing referral fraud detection because client_ip/fingerprint weren't forwarded, granting bonus points or pulling top referrers via the API for reward fulfillment, broadcast send caps forcing an ESP handoff, automating without Zapier (Waitlister has none — webhooks/API only), or comparing Waitlister vs LaunchList/KickoffLabs/GetWaitlist/Prefinery. Do NOT use for list-growth strategy (use /sales-audience-growth) or LaunchList help (use /sales-launchlist).
development
LaunchList platform help — viral pre-launch waitlist platform with one-time lifetime pricing, gamified referrals (queue jumping, leaderboard, position inflation), embed widget + custom form POST endpoint, new_user/email_verify webhooks, Zapier, and spam protection. Use when choosing Free (100 submissions) vs Launch $29 (500) vs Grow $79 one-time (10K — webhooks, Zapier, team unlock here), wiring waitlist signups into Mailchimp/Kit/HubSpot or a CRM because LaunchList has no email broadcast system, needing programmatic access when there is no public REST API yet (form POST + webhook workaround), building a webhook handler with referred_by referral attribution, blocking disposable-email or bot signups on a viral waitlist, a custom signup form not submitting or not tracking referrals, or comparing LaunchList vs KickoffLabs/Viral Loops/Prefinery/GetWaitlist on one-time vs subscription pricing. Do NOT use for list-growth strategy (use /sales-audience-growth) or KickoffLabs help (use /sales-kickofflabs).
development
UpViral platform help — viral referral marketing and list-building platform (by Emarky) for viral sweepstakes, giveaway/reward campaigns, pre-launch waiting lists, and milestone referrals, with REST API (`app.upviral.com/api/v1/`, form-encoded `uvapikey` + `uvmethod`), Callback-URL webhooks, IP-based fraud detection, and 30+ ESP/CRM integrations. Use when campaigns aren't tracking referral points, deciding between Starter $79/mo (10K leads, NO API) vs Business $119/mo (API + webhooks) vs Premium $319/mo, the API erroring because you're on Starter where API/webhooks are gated, building a pipeline with `add_contact`/`get_leads`/`get_leads_points`, interpreting same-IP suspicious-referral flags, or picking UpViral over Viral Loops/Vyper/Gleam. Do NOT use for newsletter audience growth (use /sales-audience-growth), KickoffLabs help (use /sales-kickofflabs), merge-tag referrals (use /sales-referralkit), SparkLoop recommendations (use /sales-sparkloop), or multi-level Level 1/2/3 tracking (use /sales-referralhero).
tools
ReferralHero platform help — full-stack referral, affiliate, waitlist, contest, and NPS platform with REST API, webhooks, Zapier, native ESP connectors, multi-level referral tracking (Level 1/2/3), coupon groups, anti-fraud, and a 5,000 calls/hour limit. Use when referrals aren't tracking, deciding between Free (no API) vs PRO $199/mo (API + webhooks) vs PREMIUM $399/mo (ReCaptcha + SMS Verification), auth failing with `no_token` or `Bearer` vs `X-API-Key`, Level 2/3 counts off from calling `level_2_all_referrals` not `level_2_referrals`, bulk 429s from not chunking the 500-transaction `add_bulk_transactions` limit, coupon endpoints 404 without a coupon group, reward fulfillment (`promote` then `unlock_promoted_reward`) failing, or comparing to SparkLoop/ReferralKit/GrowSurf. Do NOT use for newsletter audience growth (use /sales-audience-growth), merge-tag referrals (use /sales-referralkit), SparkLoop recommendations (use /sales-sparkloop), or affiliate strategy across tools (use /sales-affiliate-program).