Flows before campaigns
Campaigns earn only when you send. Flows earn continuously, triggered by what a customer just did — which is also when they're most likely to buy.
The order to build them in
Abandoned cart first, because the intent is highest. Then welcome, to convert new subscribers while attention is fresh. Then browse abandonment, post-purchase and win-back.
Segment or waste it
Sending the same message to your whole list trains people to ignore you. Segment by purchase history, engagement and product interest, and the same list produces materially more revenue.