Salesforce marketing cloud has recently released a new feature Einstein send time optimization. Basically, SFMC calculates the best time to send an email at each subscriber level based on their email open history.
How does it calculates send time for subscribers which are newly added and don't have any email send or open history? Does it send them right away or there is some optimum send time at an overall level as well which can be used in such cases.
Here the answer from Support:
In regards to how it calculates send time for subscribers which are newly added and don't have any email send or open history, it won't send to them straight away. Einstein gathers data for approximately 20 factors, such as the number of emails sent to a contact, the number of emails a contact opened, and the day of the week the email is opened. It uses machine-learning to weight each factor according to its level influence on predicting future engagement behaviour. Then Einstein analyzes this data and assigns a likelihood score to each of the 168 hours in a week for each contact. Send Time Optimization uses this information to recommend the best send times for each contact.
I will continue asking about more details because i think the answer is not complete. You can leave comments under this answer for the remaining questions you have. I will transfer them to the case I opened.
If an subscriber does not have a score they will move immediately through the STO activity to the email activity.
