Hi @isaev, you can put a condition in front of the tag that is: “tag isn’t YOURTAG”, now this condition checks if the user already had the tag and the messages, so it won’t continue if this is the case. Hope that helps! 

yes
but i cant put a conditios before tag in url button

You give them a Tag in a Manychat automation after they click the Youtube link, right? If you give them this tag let’s say it’s called “Clicked Link”, you can put a condition directly after the youtube link and before the tag that should say tag isn’t “Clicked Link”. Now the automation will start the first time the button is clicked, but if the button is clicked again, the condition is false, so the messages after the condition won’t be sent. 

@Frank Unfortunately, no. A button click can go to an Action but not a condition as far as I can see. I’m facing the same issue.

I have fixed it by splitting the automation into 2:

Automation 1: “button” → add tag 1 → condition (check for tag 2) → if not tagged with tag 2, add tag 2.

Automation 2 is triggered by adding tag 2.

If the user clicks the button from Automation 1, the condition fails, and so the tag is not added again, therefore not triggering automation 2 again.