✉ MAIL SEAL

Ed25519 DKIM signing

Ed25519 DKIM email signing, keys come from the operating system’s secure random generator. Mail you send through the API is cryptographically signed. Ed25519 is a classical algorithm — this is not post-quantum signing.

Before Mail Seal will sign or verify for a domain, you must prove you own it: publish the ownership TXT record it gives you, then call POST /domains/{domain_id}/verify-dns.

Quick Example

curl -X POST https://mailseal-api.qntyx.io/domains/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json"

API Base URL

https://mailseal-api.qntyx.io

Endpoints

Method	Path	Description
POST	/domains/	Register a domain
POST	/sign/	Sign an email
GET	/stats/	Dashboard statistics

Authentication

All endpoints require a bearer token. See Authentication for details.

Dashboard

Manage this product visually at app-mail.qntyx.io

Marketing Page

Learn more at mail.qntyx.io