Connecting Postscript
Send quiz responses from your Clarflow funnel into Postscript as Custom Events, then build SMS Flows in Postscript that trigger off them.
Prerequisites
- A Postscript account
- A Clarflow funnel with at least one phone input sub-element
Step 1: Get your Postscript Private API Key
In the Postscript dashboard go to Settings → API (app.postscript.io/account/api) and click Create Security Key Pair. Copy the Private Key (starts with sk_). Keep this secret — anyone with it can write to your Postscript shop.
Step 2: Connect Postscript in Clarflow
Open Settings → Integrations, find the Postscript card, and click Connect. Paste the Private API Key, give the connection a name, and save.
Step 3: Enable the toggle on your phone input
Open your funnel in the editor. Select the phone input sub-element and turn on Send responses to Postscript.
Then save the funnel and make it public from the share popover.
Step 4: Build a Flow in Postscript
In Postscript, go to Flows → Create New and pick Custom Event as the trigger. Select the event named clarflow_quiz_response — this is the constant event Clarflow sends every time a visitor submits the phone field on a funnel that has Postscript enabled.
The funnel title is included as the funnel_title property on the event, so you can branch on it inside Postscript if you have multiple funnels firing into the same shop.
Step 5: Use quiz answers as merge tags
Each quiz response is included on the event as a separate property (q1_skin_type, input1_email, dropdown1_country, etc.). Inside the Postscript message editor, use merge tags to drop them into your SMS copy.
Notes
- Postscript identifies subscribers by phone number. Clarflow normalizes the phone to E.164 format (
+15551234567) before sending. Visitors who enter an unparseable phone simply don't trigger the event — the funnel still completes normally. - The event also includes the visitor's email when the funnel collected one (in addition to the phone), which helps Postscript match against existing subscribers.