Postmark + Foldr Integration
Postmark is the transactional email service trusted for its deliverability. Pair with Foldr when transactional emails need to include files too large to attach — link out to Foldr URLs instead.
How to Connect Postmark to Foldr
Generate a Foldr API key
Sign in at foldr.space and create an API key at foldr.space/developers.
Authenticate with Postmark
Generate or locate your Postmark API credentials per Postmark's documentation.
Wire the two APIs together
Write a small script or serverless function that calls Postmark, processes the result, and POSTs to https://foldr.space/api/v1/files (or /links for short links).
Deploy + schedule
Run the script on-demand, via a cron job, or trigger it from a webhook — the Foldr REST API has no client-library lock-in.
Common Use Cases
- Host lead-magnet downloads on Foldr and deliver via Postmark campaigns
- Include Foldr short links in Postmark emails for unified click tracking
- Trigger Postmark automations when a subscriber downloads a Foldr file
- Run A/B tests on gated vs. open Foldr downloads in Postmark
Postmark + Foldr FAQ
How do I connect Foldr to Postmark?
You connect Foldr to Postmark via REST API. Full steps are listed above under "How to Connect". In short: create a Foldr API key, configure the REST API integration pointed at https://foldr.space/api/v1/, and map Postmark's data into Foldr's request body.
Do I need a paid Foldr plan to use Postmark with Foldr?
The Foldr free tier supports basic uploads via the API with 7-day expiry. For integration use with Postmark — higher rate limits, permanent storage, multiple API keys, and webhook subscriptions — Foldr Pro (from $5/mo) is recommended.
What Foldr features can I call from Postmark?
From Postmark you can invoke any Foldr action: uploading files (up to 2 GB each), creating short links, generating bio pages, creating hosted forms, and reading download analytics. See the Foldr API docs for the full endpoint list.
Is there an official Foldr app for Postmark?
Not a first-party app — Foldr integrates with Postmark through REST API, which is usually a better fit because it doesn't require installing an extra app. If you'd rather have a native integration, let us know at foldr.space/contact.
Related Email & Newsletter Integrations
Start connecting Postmark to Foldr
Grab a Foldr API key and wire up the steps above — most teams get the first end-to-end flow running in under ten minutes.
Get your Foldr API key