Within Journey Builder in SFMC, 2 Einstein components are available:
1. Einstein STO
Einstein STO provides send time optimization, which allows sending a message to a contact when Einstein thinks the contact is most likely to open a message, within a timeframe that you define.
It's possible to continue using Einstein STO in combination with DESelect Engage; first you put a DESelect Engage component in the journey to decide if a contact should receive a send, next you have Einstein STO figure out the exact timing of the send.
2. Einstein Frequency Split
Einstein Frequency Split is a simple saturation control solution, which considers contacts over- or undersaturated based on previous engagement data of a contact. 90 days of history and the use of the SFMC subscription center are required for this to work.
AI is used to make the saturation control decisions, so the logic is a black box, hence no feedback is provided on why a contact is considered oversaturated.
Engage provides a detailed prediction and history on wich contacts will be excluded from which campaign and why.
Saturation control rules
Einstein does not allow defining your own saturation control rules. In Engage rules can be defined up to the level of contact categories, campaign types, and channels.
Einstein does not offer campaign prioritization; it only takes the past into account and has no capability of looking ahead at other sends that are planned in the future.
Engage offers a campaign calendar where you can plan future campaigns and assign them priorities. Engage looks ahead in the future at planned campaigns to reserve timeslots for the most important campaigns.
Einstein considers a contact over- or undersaturated for a whole day, as data view data is processed only once per day. So while a contact may be undersaturated at the start of the day, as you send messages during the day, the contact may actually become oversaturated but Einstein will only detect this the next day.
Engage does not consider over- or undersaturation on a contact level, but on a campaign per contact level. Hence, a contact may be excluded from campaign 1 and 2 but included on campaign 3, even if all these 3 campaigns are sent out on the same day.
Einstein supports Email and MobilePush.
Engage supports Email, MobilePush, and SMS as native SFMC channels, but can also process custom channels, even if those sends are happening outside of SFMC.
Einstein is hosted on AWS, which may be a concern, especially for retail customers.
Engage runs on Google Cloud.
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