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Open Tracking

When trackOpens is enabled:
  • Postmark inserts a tracking pixel into your template-rendered HTML
  • Opens are sent to the SendPost webhook and reported as PM Open events (ID: 75)
  • View open rates in the SendPost dashboard

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Click Tracking

When trackClicks is enabled:
  • Postmark rewrites links to track clicks
  • Clicks are sent to the SendPost webhook and reported as PM Click events (ID: 76)
  • View click rates and URLs in the SendPost dashboard

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Viewing Analytics

  1. Navigate to Analytics in your SendPost dashboard
  2. Filter by:
    • Provider: Select your Postmark provider
    • Event Type: Filter by Postmark event types (69–78)
    • Date Range: Choose the time period
    • Sub-account: Filter by sub-account

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Rate Limiting & Throttling

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Default Rate Limits

By default, Postmark providers are configured with a rate limit (e.g. Max Sends Per Hour). This limit is set at the provider level and applies to all emails sent through your Postmark integration.

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Configuring Rate Limits

You can adjust the rate limit in the SendPost UI:
1

Navigate to Providers

Go to Settings → Providers in your SendPost dashboard
2

Edit Provider

Click on your Postmark provider to edit its settings
3

Adjust Rate Limit

Update the Max Sends Per Hour value to match your Postmark plan or desired sending rate
4

Save Changes

Save your changes. The new rate limit takes effect immediately.
Rate limiting in SendPost is configured on an hourly basis. Set it according to your Postmark plan capacity and sending requirements.

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Provider-Level Throttling

SendPost supports granular throttling by recipient domain:
ProviderDescription
GmailThrottle sending to Gmail addresses
YahooThrottle sending to Yahoo/AOL addresses
OutlookThrottle sending to Microsoft addresses
DefaultThrottle for all other domains

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Next Steps