When will an automation be triggered/sent?
Metorik will constantly check for customers / orders / subscriptions that match the rules you've defined when creating the automation. Whenever a customer / order / subscription matches the rules for the first time, the automation will be triggered and an email will be sent to the customer.
This usually happens within minutes of the rules being met.
A customer will only receive a certain automation once in their lifetime. So even if they stop matching the rules and later match the rules a 2nd separate time, they will not get another email.