Postmark

Added 14h ago

Postmark is an email delivery service that provides an API and SMTP interface for sending transactional and marketing emails. It is used by developers and businesses to programmatically send email messages.

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Subprocessors

Third parties that may process data on Postmark's behalf, grouped by function.

Mapping subprocessors

We haven't catalogued Postmark's subprocessors yet. This panel updates automatically once we've checked.

Change history

Subprocessors, regions, and use cases added or removed as Postmark's list changed over time.

Customers

Companies publicly known to use Postmark.

TW
Twiliotwilio.com
Twilio provides cloud APIs for sending SMS, email, voice calls, and RCS messages, and for adding conversational AI and identity verification to applications. It is used by businesses to build customer communication experiences.
WO
WorkOSworkos.com
WorkOS provides APIs and SDKs that let developers add enterprise authentication and security features—such as single sign‑on, directory sync, audit logging, and multi‑factor authentication—to their applications. It is used by software teams building apps that need to support enterprise customers.

Third parties that may process data on Postmark's behalf, grouped by function.

Mapping subprocessors

We haven't catalogued Postmark's subprocessors yet. This panel updates automatically once we've checked.