What makes a good post-purchase email sequence?
Short answer
A good post-purchase sequence has four emails: order confirmation, delivery follow-up, review request at seven days, and a reorder nudge at the right interval for your product.
The four emails that matter
Order confirmation is table stakes. What happens after that is where most stores stop and the good ones keep going.
Timing by product type
Consumables need a reorder nudge before the product runs out. Durables need a cross-sell once the customer has lived with the product long enough to want the next thing.
One mistake to avoid
Do not ask for a review before the product arrives. It sounds obvious but most default flows get this wrong.