Email Validator vs MailboxValidator
Email Validator
emailvalidator.io
MailboxValidator
mailboxvalidator.comSide by side
| Figure | Email Validator | MailboxValidator |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 1 | 10 |
| Spec score · Email Verification APIs | 7.7 (#21) | 7.9 (#12) |
| Bulk validation | Users can upload lists for bulk verification, and the API bulk endpoint accepts up to 500 emails per request. | Users can upload an email list in text or CSV format for bulk validation. |
| Integrations | The maker describes REST API integration and webhook notifications; no named third-party integrations are listed on the opened page. | Listed integrations include Zapier, Make, MailChimp, AWeber, Mailgun, SendGrid, Campaign Monitor, SparkPost, HubSpot, MailerLite, Constant Contact, VerticalResponse, MooSend, Mailjet, iContact, ActiveCampaign, Intercom, Autopilot, ChatGPT, and MCP. |
| Purpose | Email Validator checks email deliverability using more than 20 validation checks. | MailboxValidator checks email addresses and mailboxes to identify invalid addresses and help reduce email bounces. |
| Security | The privacy policy says traffic is encrypted in transit using TLS, passwords are hashed, and API keys are stored securely. | Hexasoft says it maintains technical, administrative, and physical measures reasonably designed to help protect personal data from unauthorized processing. |
| Support | The privacy policy lists [email protected] for questions about the policy or user data. | The privacy policy lists [email protected] and says to allow up to four weeks for a reply to privacy inquiries. |
| Validation checks | Checks include syntax, DNS and MX records, live SMTP, SPF/DKIM/DMARC, disposable and alias detection, blacklists, domain age, catch-all status, MTA-STS, and BIMI. | Checks include syntax, MX records, SMTP response, greylisting, disposable addresses, free providers, role addresses, suppression, DMARC, strict SPF, and website reachability. |
| Validation method | The service performs DNS lookups and connects to recipient mail servers using SMTP; it does not send message content. | The company says it does not send an email to the recipient during checking and instead tests the connection using the SMTP server. |
Plans
MailboxValidator
- API-FREEFree
- API-FREE+Free
- BULK-TRIALFree
- BULK-1$19.95, paid once
- BULK-5$39.95, paid once
- BULK-10$59.95, paid once
- BULK-50$149.95, paid once
- BULK-100$199.95, paid once
- BULK-500$399.95, paid once
- BULK-1000$699.95, paid once
In their own words
Email Validator
Email Validator has no write-up on Specifiction yet; its figures are above.
MailboxValidator
MailboxValidator checks email addresses and mailboxes to flag invalid addresses and help reduce email bounces. It is available on the web and through an API, with single-address results returned as JSON or XML. For lists, users can upload text or CSV files for bulk validation. Checks cover syntax, MX records, SMTP responses, greylisting, disposable and free-provider addresses, role addresses, suppression, DMARC, strict SPF, and website reachability. The company says it tests the connection through the SMTP server without sending a message to the recipient. Listed integrations include Zapier, Make, MailChimp, Mailgun, SendGrid, HubSpot, and others; API documentation links libraries for Node.js, Ruby, PHP, Perl, Python, Java,.NET, Go, and Rust. The free API plan is free, billed per month, with 300 queries and 30-day validity. A bulk trial is free for 100 queries and 30-day validity. Yahoo validations are unsupported, and non-ASCII addresses are marked invalid syntax. The FAQ says refunds are not offered; its privacy policy says processed personal data is retained indefinitely, subject to policy limits on deletion requests.