Instantly & Smartlead
Verify Instantly and Smartlead lists before they burn your domain
Sequencers amplify bad data. One undeliverable-heavy import tanks warmup and reputation across every campaign on that inbox. Verifly sits before Instantly or Smartlead import, CSV, Clay export, or n8n webhook, so only deliverable addresses enter the send queue. Pay-as-you-go credits, no monthly contract.
No card needed · 500 free credits with a work email · credits never expire
curl -X POST "https://verifly.email/api/v1/verify/batch" \
-H "Authorization: Bearer vf_your_api_key" \
-H "Content-Type: application/json" \
-d '{"emails":["lead1@acme.com","lead2@acme.io"]}'Real-time SMTP mailbox checks
Single, batch, and async bulk verification
Disposable, role account, and catch-all detection
Pay-as-you-go credits with no subscription lock-in
Search fit
Built for Instantly and Smartlead email verification
Use Verifly when you need a simple API, predictable pricing, and clean JSON results before emails hit your product, CRM, or campaign tool.
Why verify before Instantly / Smartlead import
Both Instantly and Smartlead reward clean inputs: lower bounce rate protects domain warmup, inbox placement, and campaign capacity. Scraped or enriched lists routinely carry 10 to 30% undeliverable or disposable addresses. Filtering those before import is cheaper than recovering a burned domain.
Verifly does live mailbox checks and returns deliverable / undeliverable / risky plus disposable, role, and catch-all flags. Drop undeliverable entirely; drop role accounts for cold outreach; decide on catch-all / risky based on how new the sending domain is.
Three practical workflows
CSV path: export or assemble your lead column → POST /api/v1/verify/batch (or async bulk for large jobs) → keep deliverable → import into Instantly or Smartlead. Clay path: HTTP enrichment column in Clay, then export the filtered view. n8n path: HTTP Request or n8n-nodes-verifly node between enrichment and sequencer webhook.
- Collect emails into one column (CRM, Clay, Apollo, scrape, or prior campaign).
- Verify with Verifly batch or bulk using your vf_ key.
- Remove undeliverable + disposable (+ role / catch-all if the domain is fresh).
- Import only survivors into Instantly or Smartlead and start the sequence.
curl -X GET "https://verifly.email/api/v1/verify?email=lead@acme.com" \
-H "Authorization: Bearer vf_your_api_key"Pricing that matches campaign bursts
Outbound volume is lumpy. Verifly public packs start at Starter 5k/$10 and scale to $0.60 per 1,000 at the largest size. Credits never expire, so a pack bought for one Instantly wave still covers the next Smartlead client month later.
Agency or higher-cap needs: hello@veriflyemail.com, only contact route for Verifly partnerships and support.
FAQ
Frequently asked questions
Is there a native Instantly or Smartlead plugin?
Verifly integrates via CSV, HTTP API, Clay, or n8n, not a proprietary Instantly/Smartlead plugin. That keeps the same key working across every sequencer you use. Dedicated pages: /instantly-email-verification and /smartlead-email-verification.
Will verification eliminate all bounces?
No verifier can promise zero bounces. Catch-all domains and mailbox state changes mean some risk remains. Verifly reduces bounce risk by removing clearly undeliverable and disposable addresses before import.
How large a list can I clean before a campaign?
Batch accepts up to 100 addresses per call for ongoing chunks. Async bulk accepts jobs up to 1,000,000 addresses. Same API key and credit pricing either way.
Should I remove catch-all addresses for Instantly?
On a newly warmed domain, yes, exclude catch-all / risky. On an established domain with healthy placement, you can keep them and monitor bounce rate closely.
Can I reuse credits across Instantly and Smartlead clients?
Yes. Credits are account-level and never expire. One pack covers every campaign and client workbook on that Verifly key.
Who do I email for outbound agency setup?
hello@veriflyemail.com, that is the only Verifly contact address.
Ready to wire this?
Start free with 100 credits, mint a vf_ API key, and paste the recipe above. Buy a pack only when you need more, credits never expire.