Authentication
Compose credentials, magic links, sessions, passkeys, MFA, and connected-provider access without handing application identity to a framework.
Magic links
Postmark
Deliver rendered Playstack mail or Postmark provider templates through an explicit driver and native client escape hatch.
Visit Postmark ↗Supported features
Accounts and tenancy
Model organizations, memberships, invitations, ownership, active-account switching, and fail-closed data scope.
Invitations · Ownership transfer
Email delivery
Render typed application email and deliver it through explicit SES, Mailgun, Postmark, Resend, SendGrid, SMTP, or capture-test providers.
Rendered application email · Provider templates
Notifications and delivery
Define typed notifications, resolve recipient preferences, deliver across explicit channels, and retain one provider-independent history of every send.
Multi-channel delivery
Audiences and subscriber lifecycle
Build waitlists, newsletters, release lists, and preference centers with explicit consent, segmentation, confirmation, and delivery boundaries.
Broadcast delivery
Package reference
Rendered mail and provider templates
The Postmark driver supports portable rendered messages and provider-owned template IDs plus exact JSON models. Configure separate clients when message streams need different operational policies.
Unknown delivery outcomes
The adapter distinguishes provider rejection, unavailability and MailOutcomeUnknownError. A lost send response can mean the message was accepted; do not classify every network failure as safe to retry. Configure production preflight and reconcile uncertain sends through application-owned delivery records. Capture tests are not proof of production deliverability.
