# Postmark Integration — PostFrame — EternalEngine

Connect Postmark to PostFrame for premium transactional email delivery with best-in-class inbox placement rates.

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Provider Integration

# Postmark

Connect Postmark with a server token and an optional message stream. PostFrame sends through it with full tracking and suppression checks, and moves to another provider when Postmark returns an error.

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## Why Postmark

Transactional focus

Postmark is built for the messages people are waiting on — password resets, one-time codes, receipts

Separate reputation

Dedicated transactional infrastructure keeps marketing traffic away from your transactional reputation

Message streams

Name the stream when you connect (default: outbound) to keep transactional and broadcast reputation separate

Server token

One server API token connects Postmark — the token lives in the secrets vault

Ideal For

Password reset emails

The messages a customer is sitting and waiting for

Invoice notifications

High inbox placement for financial communications

Welcome sequences

First impressions on a provider built for them

Account alerts

Security notifications that can't afford to land in spam

## Keep exploring PostFrame

[### Amazon SES Bring your own AWS account and region. Open Amazon SES →](https://eternalengineos.io/features/postframe/byop/amazon-ses/)[### SendGrid Transactional and marketing from one API key. Open SendGrid →](https://eternalengineos.io/features/postframe/byop/sendgrid/)[### Delivery confirmation Every accepted message is logged with the provider's response. Open Delivery confirmation →](https://eternalengineos.io/features/postframe/tracking/delivery-confirmation/)

Questions

## Common questions, straight answers.

What do I enter to connect Postmark?

A server API token and, optionally, a message stream name (PostFrame uses "outbound" when you leave it blank). The token is stored in the secrets vault.

Can I keep Postmark as the primary and SES as the fallback?

Yes. Every provider connection carries a priority; PostFrame tries them in order and moves to the next one when a send fails.

What happens when this provider returns an error?

The send moves to your next provider by priority on the same request, up to three attempts. After five failures inside five minutes the provider's circuit opens and it is skipped for sixty seconds before being tried again.

Where are my provider credentials stored?

In the EternalEngine secrets vault. The PostFrame database keeps only a vault path for each provider connection, never the secret itself.

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