Postmark Email#

Access Postmark's transactional email platform via the Postmark API. Inspect outbound messages, templates, and delivery events. Review bounce, spam, and engagement statistics. Manage webhooks and message streams.

This skill uses ClawLink for hosted connection flows and credentials so you do not need to configure Postmark API access yourself.

Setup in 3 Steps#

Step 1: InstallStep 2: Pair AccountStep 3: Connect Postmark_App-specific connection GIF coming soon_Run the install command in OpenClawSign in and approve the deviceOpen the dashboard and connect Postmark

How It Works#

text

┌─────────────────┐     ┌──────────────┐     ┌──────────────────┐
│   OpenClaw      │────▶│   ClawLink   │────▶│  Postmark API   │
│   (User Chat)   │     │   (API Key)  │     │                  │
└─────────────────┘     └──────────────┘     └──────────────────┘
          │                       │                       │
          │  1. Install Plugin   │                       │
          │2. Pair Device      │                       │
          │3. Connect Postmark  │                       │
          │                      │  4. Secure Proxy      │
          │                      │  5. API Requests      │
          │                      │                       │
          ▼ ▼                       ▼
    ┌──────────┐           ┌──────────┐           ┌──────────┐
    │  SKILL   │           │ Dashboard│           │ Postmark │
    │  File    │           │ Auth     │           │ Platform │
    └──────────┘           └──────────┘           └──────────┘

Install#

Install the verified ClawLink plugin from ClawHub. After the user confirms, complete the full setup so ClawLink tools are visible in the next OpenClaw chat.

bash

openclaw plugins install clawhub:clawlink-plugin
openclaw config set tools.alsoAllow '["clawlink-plugin"]' --strict-json
openclaw gateway restart

Then tell the user: "OpenClaw has been restarted. Send /new as a standalone message to start a fresh chat, then ask for Postmark again."

Quick Start#

bash

# Get outbound overview
clawlink_call_tool --tool "postmark_get_outbound_overview" --params '{}'

# Search outbound messages
clawlink_call_tool --tool "postmark_search_outbound_messages" --params '{"status": "sent"}'

# List templates
clawlink_call_tool --tool "postmark_list_templates" --params '{}'

Authentication#

All Postmark tool calls are authenticated automatically by ClawLink using the user's Postmark account.

No API key is required in chat. ClawLink stores the API key securely and injects it into every Postmark API request on the user's behalf.

Getting Connected#

1. Install the ClawLink plugin (see Install above).
2. Pair the plugin with clawlink_begin_pairing if it is not configured yet.
3. Open https://claw-link.dev/dashboard?add=postmark and connect Postmark.
4. Call clawlink_list_integrations to verify the connection is active.

Connection Management#

List Connections#

bash

clawlink_list_integrations

Response: Returns all connected integrations. Look for postmark in the list.

Verify Connection#

bash

clawlink_list_tools --integration postmark

Response: Returns the live tool catalog for Postmark.

Reconnect#

If Postmark tools are missing or the connection shows an error:

1. Direct the user to https://claw-link.dev/dashboard?add=postmark
2. After they confirm, call clawlink_list_integrations to verify
3. Then call clawlink_list_tools --integration postmark

Security& Permissions#

• Access is scoped to messages, templates, streams, and webhooks within the connected Postmark server.
• All write operations require explicit user confirmation. Before executing any create, update, or delete call, confirm the target resource and intended effect with the user.
• Destructive actions (delete template, delete webhook, archive stream) must be confirmed.
• Server configuration changes affect all email sending on that server.

Tool Reference#

Message Streams#

ToolDescriptionModepostmark_list_message_streamsList all message streams for a serverReadpostmark_get_message_streamGet details of a specific streamReadpostmark_create_message_streamCreate a new message streamWritepostmark_update_message_streamUpdate a stream's name or descriptionWritepostmark_archive_message_streamArchive a message stream (soft delete)Writepostmark_unarchive_message_streamRestore an archived streamWrite

Outbound Messages#

ToolDescriptionModepostmark_search_outbound_messagesSearch sent messages with filtersReadpostmark_get_sent_countsGet sent message counts by date rangeReadpostmark_get_delivery_statsGet delivery statisticsReadpostmark_list_outbound_message_opensList open events for outbound messagesReadpostmark_list_outbound_message_clicksList click events for outbound messagesRead

Inbound Messages#

ToolDescriptionModepostmark_search_inbound_messagesSearch inbound messagesRead

Templates#

ToolDescriptionModepostmark_list_templatesList all templatesReadpostmark_get_templateGet template details by IDReadpostmark_create_templateCreate a new templateWritepostmark_edit_templateUpdate an existing templateWritepostmark_delete_templateDelete a template permanentlyWritepostmark_validate_templateValidate a template against sample dataRead

Bounces & Spam#

ToolDescriptionModepostmark_get_bounce_countsGet aggregate bounce countsReadpostmark_get_bouncesList bounces with filtersReadpostmark_get_spam_complaintsGet spam complaint countsReadpostmark_check_spam_scoreCheck spam score of raw emailRead

Statistics & Engagement#

ToolDescriptionModepostmark_get_outbound_overviewGet outbound statistics overviewReadpostmark_get_email_open_countsGet email open countsReadpostmark_get_click_countsGet link click countsReadpostmark_get_email_client_usageGet email client usage statisticsReadpostmark_get_browser_usageGet browser usage for clicksReadpostmark_get_browser_platform_usageGet browser platform usageReadpostmark_get_clicks_by_browser_familyGet clicks grouped by browserReadpostmark_get_clicks_by_locationGet clicks by content type (HTML/Text)Readpostmark_get_opens_by_platformGet opens by platformReadpostmark_get_tracked_email_countsGet counts of tracked emailsRead

Suppressions#

ToolDescriptionModepostmark_list_suppressionsList suppressed email addressesReadpostmark_create_suppressionsAdd addresses to suppression listWritepostmark_delete_suppressionsRemove addresses from suppression listWrite

Webhooks#

ToolDescriptionModepostmark_list_webhooksList all webhooksReadpostmark_get_webhookGet webhook detailsReadpostmark_create_webhookCreate a new webhookWritepostmark_edit_webhookUpdate a webhook's URL or triggersWritepostmark_delete_webhookDelete a webhook permanentlyWrite

Inbound Rules#

ToolDescriptionModepostmark_list_inbound_rulesList inbound rule triggersReadpostmark_create_inbound_ruleCreate an inbound ruleWritepostmark_delete_inbound_ruleDelete an inbound ruleWrite

Server Configuration#

ToolDescriptionModepostmark_get_serverGet server configuration detailsReadpostmark_edit_serverUpdate server settingsWrite

Code Examples#

Get outbound overview#

bash

clawlink_call_tool --tool "postmark_get_outbound_overview" \
  --params '{
    "from": "2024-01-01",
    "to": "2024-01-31"
  }'

Search outbound messages#

bash

clawlink_call_tool --tool "postmark_search_outbound_messages" \
  --params '{
    "recipient": "customer@example.com",
    "status": "sent",
    "tag": "welcome"
  }'

Get template details#

bash

clawlink_call_tool --tool "postmark_get_template" \
  --params '{
    "template_id": "TEMPLATE_ID"
  }'

Create a webhook#

bash

clawlink_call_tool --tool "postmark_create_webhook" \
  --params '{
    "url": "https://example.com/webhook/postmark",
    "triggers": {
      "open": true,
      "click": true,
      "bounce": true,
      "spam_complaint": true
    },
    "http_headers": {
      "Authorization": "Bearer secret_token"
    }
  }'

List suppressions#

bash

clawlink_call_tool --tool "postmark_list_suppressions" \
  --params '{
    "message_stream": "outbound"
  }'

Discovery Workflow#

1. Call clawlink_list_integrations to confirm Postmark is connected.
2. Call clawlink_list_tools --integration postmark to see the live catalog.
3. Treat the returned list as the source of truth. Do not guess or assume what tools exist.
4. If the user describes a capability but the exact tool is unclear, call clawlink_search_tools with a short query and integration postmark.
5. If no Postmark tools appear, direct the user to https://claw-link.dev/dashboard?add=postmark.

Execution Workflow#

text

┌─────────────────────────────────────────────────────────────┐
│  READ OPERATIONS (Safe)                                     │
│  list → get → search → describe → call                      │
│                                                             │
│  Example: Get outbound overview → List templates → Report  │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│  WRITE OPERATIONS (Require Confirmation)                     │
│  list → get → describe → preview → confirm → call           │
│                                                             │
│  Example: Describe tool → Preview changes → User approves   │
│           → Execute update                                  │
└─────────────────────────────────────────────────────────────┘

1. For unfamiliar tools, ambiguous requests, or any write action, call clawlink_describe_tool first.
2. Use the returned guidance, schema, whenToUse, askBefore, safeDefaults, examples, and followups to shape the call.
3. Prefer read, list, search, and get operations before writes when that reduces ambiguity.
4. For writes or anything marked as requiring confirmation, call clawlink_preview_tool first.
5. Execute with clawlink_call_tool. Pass confirmation only after the preview matches the user's intent.
6. If the tool call fails, report the real error. Do not invent results or restate the failure as a missing capability unless the live catalog supports that conclusion.

Notes#

• Postmark API has rate limits. Use exponential backoff when encountering 429 errors.
• SpamComplaint suppressions cannot be removed from the suppression list — only HardBounce and ManualSuppression can be deleted.
• Archived message streams are permanently deleted after 45 days.
• Webhook triggers require link tracking to be enabled for click and open events.
• Date range filters use ISO 8601 format (YYYY-MM-DD).

Error Handling#

Status / ErrorMeaningTool not foundThe tool name does not exist in the current catalog. Verify with clawlink_list_tools --integration postmark.Missing connectionPostmark is not connected. Direct the user to https://claw-link.dev/dashboard?add=postmark.not_foundTemplate, webhook, or stream does not exist. Check the ID.validation_errorInvalid parameter or missing required field. Review the tool schema with clawlink_describe_tool.Rate limitedToo many requests. Wait and retry with exponential backoff.Write rejectedUser did not confirm a write action. Always confirm before executing writes.

Troubleshooting: Tools Not Visible#

1. Check that the ClawLink plugin is installed: bash

   openclaw plugins list
   
   

2. If the plugin is installed but tools are missing, tell the user to send /new as a standalone message to reload the catalog.

3. If a fresh chat does not help, run: bash

   openclaw config set tools.alsoAllow '["clawlink-plugin"]' --strict-json
   openclaw gateway restart
   
   

4. After restart, tell the user to send /new again and retry.

Troubleshooting: Invalid Tool Call#

1. Ensure the integration slug is exactly postmark.
2. Use clawlink_describe_tool to verify parameter names and types before calling.
3. For write operations, always call clawlink_preview_tool first.

Resources#

• Postmark API Documentation
• Message Streams API
• Templates API
• Webhooks API
• ClawLink: https://claw-link.dev/?utm_source=clawhub&utm_medium=referral&utm_content=postmark-email
• ClawLink Docs: https://docs.claw-link.dev/openclaw
• ClawLink Verification: https://claw-link.dev/verify

Related Skills#

• Postmark — For this skill's native documentation

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