How can Zapier support Dropbox when Dropbox doesn't support Webhooks?

Question

To the best of my knowledge Zapier basically uses Webhooks to link services to eachother. One of the supported services is Dropbox. However Dropbox (still) doesn't support webhooks. (i.e: Dropbox can't signal that a file has, say, updated or changed, to a arbitrary webhook endpoint of choice) .

So how then does Zapier support Dropbox? Does it do longpolling or something?

Answer 1

You'd have to ask them, but I would assume they poll the /delta API.