postmark
Facilitates effective use of the Postmark email platform for sending, processing, and managing transactional emails and templates.
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The postmark skill was audited on Mar 8, 2026 and we found 12 security issues across 2 threat categories. Review the findings below before installing.
Categories Tested
Security Issues
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 3 | description: Use when working with Postmark email platform - routes to specific sub-skills for sending emails, processing inbound email, managing templates, or configuring webhooks. |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 19 | | **Inbound processing** | `postmark-inbound` | Processing incoming emails via webhooks, building reply-by-email, email-to-ticket, or document extraction | |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 21 | | **Webhooks** | `postmark-webhooks` | Setting up webhooks for delivery, bounce, open, click, spam complaint, and subscription change events | |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 30 | - **"Process inbound webhooks"** → `postmark-inbound` |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 32 | - **"Track deliveries/bounces/opens"** → `postmark-webhooks` |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 33 | - **"Set up bounce handling"** → `postmark-webhooks` |
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Webhook reference - potential data exfiltration
SourceSKILL.md
| 49 | | **Server Token** | `X-Postmark-Server-Token` | Sending emails, templates, bounces, webhooks, message streams | |
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External URL reference
SourceSKILL.md
| 52 | Get your Server API Token from [Postmark Servers](https://account.postmarkapp.com/servers). |
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External URL reference
SourceSKILL.md
| 79 | - [Postmark Developer Docs](https://postmarkapp.com/developer) |
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External URL reference
SourceSKILL.md
| 80 | - [API Reference](https://postmarkapp.com/developer/api/overview) |
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External URL reference
SourceSKILL.md
| 81 | - [Postmark API for LLMs](https://postmarkapp.com/llms.txt) |
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External URL reference
SourceSKILL.md
| 82 | - [Postmark Dashboard](https://account.postmarkapp.com) |
Scanned on Mar 8, 2026
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