Email & notification APIs
email-validation.org
Email validation at extreme speed and accuracy
A pay-as-you-go email validation service that checks single addresses, cleans bulk lists up to 1 million rows, or integrates via REST API.
Overview
A look at email-validation.org
email-validation.org is a commercial email validation service operated by Email Validation LLC. It checks whether email addresses can receive mail before you send to them, built on purpose for speed and security. The service offers three ways to validate: check single addresses with a free web checker, upload bulk lists of up to 1 million rows in CSV, XLSX or TXT format, or call the REST API with webhooks and SDKs. Every result returns one of five statuses (valid, invalid, catch-all, unknown or disposable) with a reason and recommended action. Unknown results are always free. The infrastructure runs serverless on Cloudflare Workers for speed, with mailbox checks processed in the United States or EU depending on the endpoint chosen.
Feature notes
- Single address checker with 5 free checks daily
- Bulk list upload up to 1 million rows in CSV, XLSX or TXT
- REST API with OpenAPI 3.1 spec, webhooks and SDKs
- Five status results: valid, invalid, catch-all, unknown, disposable
- 15-second timeout on mail server checks
- Serverless infrastructure on Cloudflare Workers
- 12-month answer caching for repeat checks
- EU data residency option
- 99.2% accuracy guarantee on bulk list results
- Passkey and Google Sign-in authentication
Pricing
Pricing model: Paid
Credit packs from $35 for 10,000 credits ($3.50 per 1,000) to $8,000 for 50,000,000 credits ($0.16 per 1,000). Up to 500 free credits on sign-up (100 with free email providers). 15% bonus on first 3 payments. No subscription. Unknown results free. Credits expire 24 months after grant.
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FAQ
- Is email validation the same as email verification?
- In practice, yes. Both describe checking that an address is well formed, that its domain can receive mail and, where the mail server allows it, that the mailbox exists.
- What does catch-all mean?
- A catch-all domain accepts mail for any address at that domain, real or not. No verifier can confirm a specific mailbox there without sending a message. Keep them in a separate segment, send to them carefully and watch your bounces.
- Am I charged for unknown results?
- No. Any result with the status unknown is free. That includes checks where the receiving mail server does not answer within 15 seconds.
- How big a list can I upload?
- Up to 1,000,000 rows per file, in CSV, XLSX or TXT format.
- What is email-validation.org?
- A pay-as-you-go email validation service. You can check one address, upload a list of up to 1,000,000 rows (CSV, XLSX or TXT), or call the REST API. Each result says whether the address is valid, invalid, catch-all, unknown or disposable, with a reason and a recommended action. It is a commercial service run by Email Validation LLC.
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