NioLeads
Free trialUntestedOur check runs without a key, so we couldn't test this one. It doesn't mean it's down.
Finds and verifies business email addresses from a person's name and company domain or LinkedIn profile.
Example request
curl -s -H 'Authorization: Bearer $API_KEY' 'https://v2.nioleads.com/api/openapi/credits'
Free tier, in plain English
New accounts get 30 free lookup credits with no card required; after that, paid plans start at $29/month for 500 credits.
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