Secure email signing for your organization
PostGuard for Business lets your organization sign and encrypt emails with identity-verified attributes. Manage API keys, verify your domain, and maintain full audit trails.
Why PostGuard for Business?
API Key Management
Create and manage API keys with granular control over which organizational attributes each key signs with.
Identity-Based Signing
Sign emails with your organization name, KvK number, phone, and email — verified through Yivi.
Hosted in the EU
All data is stored and processed within the European Union, ensuring full GDPR compliance and data sovereignty.
End-to-End Encryption
Emails are encrypted end-to-end. Only the intended recipient with the right identity attributes can decrypt.
Open Source
Built on the open-source PostGuard protocol. Full transparency, no vendor lock-in, community-driven.
Email Revocation Coming soon
Revoke signed emails after sending. Recipients will be notified that the email is no longer valid.
Ready to secure your organization's email?
Register for PostGuard for Business and start signing emails in minutes.
Register your organization