BillionVerify vs MailboxValidator
BillionVerify
billionverify.com
MailboxValidator
mailboxvalidator.comSide by side
| Figure | BillionVerify | MailboxValidator |
|---|---|---|
| Price from | $0.67/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 3 | 10 |
| Spec score · Email Verification APIs | 8.4 (#2) | 7.9 (#12) |
| Integrations | The maker lists integrations including Gmail, HubSpot, Mailchimp, Salesforce, Slack, Pipedrive, Zapier, Make, and Integrately. | 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 | BillionVerify verifies individual email addresses and cleans email lists for deliverability workflows. | MailboxValidator checks email addresses and mailboxes to identify invalid addresses and help reduce email bounces. |
| Security | The security overview states that HTTPS/TLS protects website, dashboard, and API traffic, and that the company does not currently maintain a completed SOC 2 attestation. | Hexasoft says it maintains technical, administrative, and physical measures reasonably designed to help protect personal data from unauthorized processing. |
| Support | Support is available by email at [email protected]. | The privacy policy lists [email protected] and says to allow up to four weeks for a reply to privacy inquiries. |
Plans
BillionVerify
- Free PlanFree
- Yearly$8 a year
- White Label PartnerPriced on request
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
BillionVerify
BillionVerify 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.