Tags with Zapier

Tags with Zapier

Maybe I'm missing something....I hope so...

Using tags for triggers is a key need.  This prevents us from having a ton of different lists.

I am trying to find out how to add a tag using zapier when someone makes a purchase....but it doesn't seem to be a possibility! 

I can see you can add them to a list, but that doesn't help much.

Is it true you can't apply a tag to a contact in ZC using zapier??