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Connect Postmark to Slack in two minutes.

Real-time triggers from Postmark, ready-made actions in Slack. Filter, transform, and route without writing a line of code.

Connect Postmark and SlackSee reverse direction
Trigger app
Postmark as the trigger

Workflows fire when something happens in Postmark.

See all 6 triggers →
Action app
Slack as the action

Workflows do something in Slack, instantly.

See all 45 actions →
Both directions

Pick the way that fits your stack.

Pair pages are mirrored. Each direction gets its own dedicated page.

Postmark → Slack

When something happens in Postmark, do it in Slack.

6 Postmark triggers wired to 45 Slack actions. Most-used pairing: Postmark Email Bounced → Add Reaction.

Slack → Postmark

Or fire it the other way around.

13 Slack triggers wired to 3 Postmark actions downstream.

See Slack → Postmark →
Popular pairings

Common Postmark → Slack workflows.

Pick a pairing to set it up in two minutes. Each one is a fully editable recipe.

Showing 9 of 270 combinations
When postmark email bounced in Postmark, add reaction in Slack.

Fires when an email bounces. Postmark has industry-leading bounce-classification — payload includes detailed bounce type for downstream logic.

When postmark email bounced in Postmark, raw api request in Slack.

Fires when an email bounces. Postmark has industry-leading bounce-classification — payload includes detailed bounce type for downstream logic.

When postmark email bounced in Postmark, archive channel in Slack.

Fires when an email bounces. Postmark has industry-leading bounce-classification — payload includes detailed bounce type for downstream logic.

When postmark email bounced in Postmark, cancel scheduled message in Slack.

Fires when an email bounces. Postmark has industry-leading bounce-classification — payload includes detailed bounce type for downstream logic.

When postmark email delivered in Postmark, add reaction in Slack.

Fires when the recipient mail server accepts. For transactional confirmation workflows that need to log "the password reset actually delivered".

When postmark email delivered in Postmark, raw api request in Slack.

Fires when the recipient mail server accepts. For transactional confirmation workflows that need to log "the password reset actually delivered".

When postmark email delivered in Postmark, archive channel in Slack.

Fires when the recipient mail server accepts. For transactional confirmation workflows that need to log "the password reset actually delivered".

When postmark email delivered in Postmark, cancel scheduled message in Slack.

Fires when the recipient mail server accepts. For transactional confirmation workflows that need to log "the password reset actually delivered".

When postmark email opened in Postmark, add reaction in Slack.

Fires on first open per recipient per email. For engagement tracking or for "warm lead detection" workflows.

How it works

Connect Postmark and Slack in five steps.

No code, no glue, no half-day setup. Each step is one click.

  1. 1
    Connect
    Authorize Postmark and Slack

    Open Tiny Command, authorize Postmark and Slack once each. Both connections are available to every workflow on your account.

  2. 2
    Trigger
    Pick a Postmark trigger

    Drop the Postmark → Postmark Email Bounced trigger onto the canvas. Tiny Command auto-registers the webhook.

    POST /v1/webhooks/postmark.trigger-email-bounced
  3. 3
    Transform
    Add a filter or AI step

    Optionally add a Filter node ("subject contains URGENT") or an AI step ("classify intent") between trigger and action.

  4. 4
    Action
    Add the Slack action

    Drop the Slack → Add Reaction action below it. Map fields from the Postmark payload into the Slack inputs.

    slack.add-reaction
  5. 5
    Publish
    Publish and forget

    Hit Publish. Tiny Command runs it in production from second one. Watch the run-log fill up.

FAQ

Questions about Postmark + Slack.

How long does it take to connect Postmark and Slack on Tiny Command?
Under two minutes. Authorize Postmark and Slack once each, drop the Postmark trigger and Slack action onto a workflow canvas, map a couple of fields, and publish. No code, no glue.
Is the Postmark ↔ Slack integration real-time?
Yes. Both Postmark and Slack expose webhooks, so events from one fire workflows in the other within seconds rather than on a polling interval.
Can I filter or transform data between Postmark and Slack?
Yes. Add a Filter node to only pass through matching events, a Switch node to branch by value, or an AI / Code node to transform payloads before they hit Slack.
What Postmark events can trigger a Slack workflow?
Any of the 6 Postmark triggers, including "Postmark Email Bounced". Each fires in real time when the matching event happens in Postmark.
Do I need a paid plan to use Postmark with Slack?
No. There's a free tier that covers most Postmark+Slack use cases without a credit card. Paid plans unlock higher run volumes and team features when you outgrow it.
What if I want Slack → Postmark instead?
Build it the same way, in reverse. There's a dedicated /integrations/slack/with/postmark page with the reverse-direction triggers and actions.
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Wire Postmark to Slack in 2 minutes.

Free tier available. No credit card. No onboarding call.

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