EmailValidator vs MailboxValidator
EmailValidator
emailvalidator.ai
MailboxValidator
mailboxvalidator.comSide by side
| Figure | EmailValidator | MailboxValidator |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 9 | 10 |
| Spec score · Email Verification APIs | 8.0 (#8) | 7.9 (#12) |
| Integrations | The API uses plain HTTP and JSON and is described as usable from any programming language that can make an HTTP request. | 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 | EmailValidator provides email address verification through a REST API and bulk CSV upload. | MailboxValidator checks email addresses and mailboxes to identify invalid addresses and help reduce email bounces. |
| Refunds | Paid credits are fully refundable within 30 days if the remaining paid-credit balance still covers the purchase; partial refunds are unavailable. | The FAQ states that the service does not offer refunds. |
| Support | The pricing page says priority support is included on all tiers. | The privacy policy lists [email protected] and says to allow up to four weeks for a reply to privacy inquiries. |
Plans
EmailValidator
- FreeFree
- Pay-as-you-go — 1,000 credits$3, paid once
- Pay-as-you-go — 5,000 credits$13, paid once
- Pay-as-you-go — 25,000 credits$45, paid once
- Pay-as-you-go — 50,000 credits$65, paid once
- Pay-as-you-go — 100,000 credits$115, paid once
- Pay-as-you-go — 250,000 credits$250, paid once
- Pay-as-you-go — 500,000 credits$425, paid once
- Pay-as-you-go — 1,000,000 credits$700, paid once
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
EmailValidator
EmailValidator 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.