postmark-webhooks

Use when setting up Postmark webhooks for tracking email delivery, bounces, opens, clicks, spam complaints, or subscription changes — includes webhook configuration, payload handling, and security.

1.10x

Quality

81%

Does it follow best practices?

Impact

99%

1.10x

Average score across 3 eval scenarios

Securityby

Passed

No known issues

Evaluation results

99%

19%

Postmark Webhook Receiver Service

Secure webhook endpoint with correct auth and immediate 200 response

Criteria

Without context

With context

Immediate 200 response

100%

RecordType routing

100%

401 for auth failure (not 403)

100%

No 403 on auth failure

100%

Constant-time comparison

100%

MessageID deduplication

100%

Partial data guards

25%

87%

SpamComplaint suppression

100%

SubscriptionChange SuppressSending check

33%

100%

Async processing note

100%

Postmark Webhook Registration Script

Webhook registration with stream, triggers, and security configuration

Criteria

Without context

With context

postmark npm package

100%

ServerClient instantiation

100%

MessageStream specified

100%

Separate streams handled

100%

HttpAuth used for security

100%

HTTPS endpoint URL

100%

PostFirstOpenOnly configured

100%

IncludeContent on Bounce

100%

IncludeContent on SpamComplaint

100%

Token from environment

100%

Secret from environment

100%

98%

Email Deliverability Management System

Bounce event handling and suppression management

Criteria

Without context

With context

HardBounce permanent removal

100%

SoftBounce not removed

100%

SpamComplaint immediate suppress

80%

100%

No hard bounce reactivation

100%

Inactive field checked

25%

100%

No spam/hard suppression removal

100%

80%

Metadata correlation

100%

Bounce type differentiation

100%

Postmark Bounces API used

100%

Suppression API used

100%

Partial data guards

100%

Repository: ActiveCampaign/postmark-skills
Commit: 73ea6bf

Evaluated: 6 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Postmark Webhook Receiver Service Postmark Webhook Registration Script Email Deliverability Management System

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