MailboxValidator
6.9#2 in email verification apisFree planFree planWebAPI
VisitMailboxValidator vs Prime Verifier
Prime Verifier
5.3#35 in email verification servicesWebAPI
VisitWhat both publish
| Fact | MailboxValidator | Prime Verifier |
|---|---|---|
| Integrations | 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. | The integrations page lists 13 native connectors, including Mailchimp, Klaviyo, ActiveCampaign, Brevo, HubSpot, Zoho CRM, SendGrid, Mailgun, Mailjet, SparkPost, Campaign Monitor, MailerLite, and Google Sheets. |
| Purpose | MailboxValidator checks email addresses and mailboxes to identify invalid addresses and help reduce email bounces. | Prime Verifier checks email deliverability and cleans lists for marketers and developers. |
| Security | Hexasoft says it maintains technical, administrative, and physical measures reasonably designed to help protect personal data from unauthorized processing. | The company says it encrypts data in transit and at rest, uses least-privilege access controls, audit logging, revocable API keys, and IP allowlisting. |
MailboxValidator plans
- 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
Prime Verifier plans
- Monthly—
- Pay-As-You-Go—
Pick MailboxValidator if…
It suits teams that need to check individual email addresses or validate uploaded lists. Developers can also use its API and linked language libraries.
Pick Prime Verifier if…
You want what its maker publishes above — check its page for the details.