First, head to your ConvertFlow website's integrations page:

Click to connect with Postscript...

Head to Postscript's API keys page, create an API key for ConvertFlow and copy your API key...

Now paste your private API key into ConvertFlow, and now Postscript and ConvertFlow are connected.

ConvertFlow will now start pulling in your Postscript keywords so you can subscribe contacts to keyword campaigns, segment subscribers by Postscript tags and trigger Postscript automations, as your subscribers submit your ConvertFlow forms.

Pro tip: To use ConvertFlow's field data for merge tags in Postscript texts, fire the "ConvertFlow: Subscriber Created" trigger.