Freedom251 › Email Verification APIs
InboxTrue
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free tier | 1,000 validations/month · 1 request/second · no credit card | Free |
| One-time | One-time cost · ≈ $0.0050 / validation · credits never expire | $50, paid once |
| Enterprise | Available on request · Custom volume and rate limits · dedicated support · invoicing and DPA | On request |
As inboxtrue.com lists them, read 5 Oct 2026. The maker's own page has the final word.
Facts from InboxTrue's own pages
- API integration
- The API uses plain HTTP and requires no SDK, with examples for curl, Node.js, Python, and Go. · inboxtrue.com, 5 Oct 2026
- API limits
- Single-email validation accepts a timeout from 1 to 90 seconds, with a default of 60 seconds. · inboxtrue.com, 5 Oct 2026
- Bulk validation
- The bulk endpoint accepts up to 200,000 email addresses per order and supports delivery webhooks. · inboxtrue.com, 5 Oct 2026
- Compliance
- For EU, UK, or Swiss personal data transfers, the policy says InboxTrue relies on safeguards such as Standard Contractual Clauses or other lawful transfer mechanisms. · inboxtrue.com, 5 Oct 2026
- Data handling
- Submitted email addresses and results may be cached, stored in validation history, and used to improve service accuracy; the policy says they are not sold. · inboxtrue.com, 5 Oct 2026
- Headquarters
- United States · inboxtrue.com, 28 Sept 2026
- Integrations
- The maker describes integration through a REST API but does not name third-party app integrations on the opened pages. · inboxtrue.com, 5 Oct 2026
- Intended users
- The privacy policy says the service is intended for businesses and developers and is not directed to children. · inboxtrue.com, 5 Oct 2026
- Product
- InboxTrue is an email validation API for checking whether addresses are real before sending email. · inboxtrue.com, 5 Oct 2026
- Security
- The privacy policy says data is encrypted in transit and at rest, access is role-based and audit logged, and API keys are hashed. · inboxtrue.com, 5 Oct 2026
- SMTP behavior
- The SMTP check uses a real handshake and says it does not send email. · inboxtrue.com, 5 Oct 2026
- Support
- Enterprise customers can request dedicated support, and the API documentation says customers can contact InboxTrue about higher rate limits. · inboxtrue.com, 5 Oct 2026
- Validation checks
- The service checks syntax, DNS/MX, SMTP mailbox existence, disposable addresses, and catch-all domains. · inboxtrue.com, 5 Oct 2026
Where InboxTrue stands on Freedom251
- Email Verification APIs#15 of 31