How-To: Setting up a Follow-up Automation for 'Solved' Tickets?

I want to improve our customer service by automatically following up on solved tickets. The goal is to send an email to the customer, say, 3 days after their ticket was marked as 'Solved', asking if the issue is truly resolved and if they were happy with the support they received. This seems like a proactive way to catch any lingering issues before they escalate. I've been trying to create an automation for this, but I'm getting stuck on the conditions. The rule should be something like: 'If ticket status is Solved for more than 72 hours AND the ticket has not been updated since then... then send a follow-up email'. Can anyone share the exact conditions and actions I should use to build this automation correctly? I'm worried about creating an email loop or sending messages to the wrong customers.