Every verification runs the full suite: syntax, DNS, SMTP, provider-specific strategies, domain intelligence, and more.
Every email address is put through eight core checks before a result is returned. Nothing is skipped.
Catches malformed addresses, missing @ symbols, invalid characters, and RFC 5321/5322 violations before any network call is made.
Verifies the domain has mail servers configured to receive email. Domains without valid MX records cannot receive mail.
Connects to the mail server and issues a RCPT TO command to confirm the mailbox exists without sending a message.
Blocks 100K+ throwaway email providers including Guerrilla Mail, Temp Mail, Mailinator, and similar services.
Flags admin@, info@, support@, noreply@, and other role-based addresses that belong to teams rather than individuals.
Identifies domains configured to accept all inbound email regardless of whether the specific mailbox exists.
Flags recycled addresses and honeypot traps that damage sender reputation and trigger blacklistings when emailed.
Auto-suggests corrections using Levenshtein distance. gmial.com becomes gmail.com. hotmial.com becomes hotmail.com.
Most verifiers treat all mail servers the same. EVA uses custom strategies for each major provider to achieve 99% accuracy that generic SMTP checks cannot match.
Deep catch-all detection with multi-probe verification. Workspace accounts use domain-level probing to distinguish accept-all from real mailboxes.
Advanced verification achieves mailbox-level accuracy for Microsoft 365 tenants, even on domains that block standard SMTP probes.
Proprietary verification achieves high accuracy on accept-all Yahoo domains where standard SMTP probes return false positives.
Custom RCPT TO handling for icloud.com, me.com, and mac.com consumer accounts. iCloud+ custom domains use catch-all probe with deep mailbox verification.
Provider-specific SMTP patterns account for privacy-preserving behaviors. Rate limiting and connection behaviors are handled per-provider.
Intelligent SMTP verification for any mail server not covered by a dedicated provider. Handles greylist retries, timeouts, and ambiguous responses gracefully.
Every email comes from a domain. EVA audits the domain too Authentication, blacklists, domain age. One call gives you the full picture.
Authentication records are checked and classified. Know whether the domain enforces strict policies or leaves itself open to spoofing.
Checked against Spamhaus, SpamCop, Barracuda, and 15 more DNSBL zones. If the domain's sending infrastructure is compromised, you see it immediately.
Domains under 30 days old are high-risk signals for fraud, phishing, and spam. Age is returned in the response so you can apply your own thresholds.
A composite score (A–F, 0–100) combines authentication, blacklist status, and domain signals into a single deliverability grade per email.
More than an endpoint. A full platform with bulk processing, webhooks, analytics, and SDKs included on every plan.
Upload a CSV or XLSX with up to 50,000 emails and walk away. EVA processes them in the background with progress tracking, then makes results available for CSV download.
Receive HTTP callbacks the moment a bulk job completes or any verification event fires. All payloads are signed and retried automatically on failure.
Track verifications per API key, monitor monthly quotas, and review recent results. All from a web dashboard with no code required.
OpenAPI 3.0 spec, interactive Swagger UI, predictable JSON responses. SDKs for JavaScript, Python, and Go. Integrate in minutes, not days.
Start with 300 free verifications. Complete verification. No credit card. No strings attached.