Post to Slack for Every New Substack Subscriber
The moment someone subscribes on Substack, this post to slack automatically — so new subscribers get an instant, consistent welcome and you never track signups by hand.
- 1
Step 1 — Trigger on new subscriber
Add a
Webhookconnected to Substack's new-subscriber event. Confirm the payload includes the email and any name fields. - 2
Step 2 — Clean the data
Add a
Setnode to standardiseemailandnameso the next step is reliable regardless of how Substack formats them. - 3
Step 3 — Post to Slack
Add a
Slacknode to post "🎉 New subscriber: {{ $json.email }}" so the team sees momentum.
Frequently asked questions
Can I do more than one action?
Absolutely — chain extra nodes after Step 3. A common combo is welcome email + log to a sheet + Slack ping, all from the single Substack trigger.
Will it fire for imported contacts?
Depends on Substack's event. Most fire only on genuine new opt-ins; check the trigger's settings if you bulk-import so you don't email an old list.
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