TriggerPostmarkReal-timeUpdated May 2026

When does Postmark fire on subscription changes?

Short answer: Drop the "Postmark → Postmark Subscription Changed" trigger on your workflow canvas, add filters if you want them, and publish. It fires within seconds of the event in Postmark, not on a polling schedule.

Use this trigger All 6 Postmark triggers

Anatomy

What this trigger looks like in a workflow.

Drop it on the canvas. Configure a couple of fields. Publish.

In the builder

Trigger

Postmark Subscription Changed

When the matching event happens

watch for subscription changednew subscription changedwhen a subscription status changeson subscription changedsubscription modifiedwhen subscription changedsubscription changed

What this trigger returns

for the curious

You don’t need to read this. Tiny Command auto-maps every field into the visual picker so downstream nodes can pull values by clicking. We show it here for power users who want to know what’s on the wire.

{
  "event": "SubscriptionChange",
  "recipient": "user@example.com",
  "message_id": "msg-123-456"
}

Output shape

Fields available to downstream nodes.

Every field below can be referenced by name in any action or filter that comes after this trigger.

Field	Type	Example
event	string	"SubscriptionChange"
recipient	string	"user@example.com"
message_id	string	"msg-123-456"

Pairs with

Drop these actions after Postmark Subscription Changed.

Add Labels to Message

Gmail · Email

Raw API Request

Slack · Communication

Add Sheet Tab

Google Sheets · Spreadsheets & Databases

Create Company

HubSpot · CRM & Sales

FAQ

Questions about Postmark Subscription Changed.

How does the Postmark Subscription Changed trigger work in Postmark?

Fires when a recipient changes their subscription preferences (e.g., unsubscribes from a specific stream). For compliance workflows that mirror preferences across systems.

Is the Postmark Subscription Changed trigger real-time?

Yes. Postmark Subscription Changed uses webhooks or push subscriptions, not polling. Your workflow fires within seconds of the event happening in Postmark.

What data does Postmark Subscription Changed return?

The full event payload from Postmark. The output shape table on this page lists every field, its type, and an example value so you can map fields into downstream nodes.

Can I filter Postmark Subscription Changed so only some events start a workflow?

Yes. Add a Filter node right after the trigger and match on any field, whether that's subject, sender, status, or anything else in the payload. Workflows only continue when the filter passes.

Do I need Postmark admin permissions to use Postmark Subscription Changed?

For most Postmark accounts a standard user can authorize the trigger. Some Postmark plans require an admin to enable third-party webhooks. Check Postmark's docs if the trigger fails to register.

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