A few I've used:

- Pushing conversions on a website to a Slack channel

- Pushing conversions from a website into a CRM (like Salesforce IQ)

- Pushing conversions on a website to gsheets

- Get an update in Slack, email, etc. when something happens on a Github repo (new issue, PR, comment, etc.)

I'm not being dense, I promise, but can't all of these tools notify you by email as part of their own settings?

For example, we use shipstation and woocommerce, both can notify via email for just about any user action. I've seen the same from GitHub, at least in relation to comments.

Indeed. But Zapier provides a single place to manage all of those feeds. On top of that they integrate via APIs so you can push selective information/data as you see fit. Much more customizable than using built in notifications.

That makes sense, thanks :)