how can we insert an object/variable/key-value from a webhook into the Gmail send draft?

You can directly map it(object) in body field of gmail.

thanks, how do I do that? there is no object that pops up

when you click on body field of action does data insert panel shows data of webhook?

yes, actually I asked the question wrong, I need to insert the text string data (URL) that was output from a code /js piece, I tried the Get storage to put it in memory but still no option to select and insert it into the email body. How to make code output be selectable as an object?

If the URL appears in the output of a code step, you can use it in the next steps. Can you show a screenshot where it doesn’t appear in the next steps?