Send email

Postmark

Email delivery service with REST API, SMTP, webhooks and inbound parsing for transactional and broadcast email.

Your data

Data location: United States: a data center outside Chicago and AWS; no EU servers planned18
Retention: Email content and metadata kept 45 days; bounces, spam complaints and unsubscribes kept indefinitely18
Used for training: Not published
Zero data retention: Not published

Compliance

Certifications: Postmark has not had a SOC audit itself; its data center is SOC 2 Type 2 accredited; a data processing agreement is offered for GDPR18
HIPAA: Not published

Read from ActiveCampaign’s own pages on 2026-11-04. Every number links to the page a value came from. For agents, the same facts as markdown: /tools/send-email/postmark.md