Great app but can sub be tagged before they reach my ESP

Hello there,
hope this mail finds you well i just signed up for the app and everything works in terms that when someone signs up the email get sent straight to my drip account but is there a way to apply a tag so that automations can be triggered or do you have any other way to make sure that when an email is submitted an automation can be triggered?
I spent countless hours yesterday thinking on how to do this and since i have loads of other app linked to my drip account all with the sole purpose of generating leads, i was completely out of options.
Any suggestions
Thank you

Just in case my account email is [email protected]
and if you can add a tag on my account from your side could you add: newsletter
Thank you