When are customers eligible to be send a message in STO(when customer will engage then...

For Send Time Optimization (STO) in Salesforce Marketing Cloud, the time a customer is predicted to engage with an email determines when they are sent the message. The email is dispatched within the next hour following the STO activity’s processing, aligning the send time with anticipated engagement peaks based on historical data. This method ensures that messages are likely to be opened when customers are most active, optimizing engagement rates.