Email Marketing for E-commerce: The Flows That Actually Drive Revenue
For an online store, most of your email revenue doesn't come from one-off campaigns — it comes from automated flows that trigger off customer behaviour: a cart left behind, an order just delivered, a product back in stock. Set these up properly once and they keep working on every new customer without you touching them again.
Abandoned cart flows
An abandoned cart flow is the single highest-leverage automation an online store can build. It targets people who were close enough to buying that they added an item to a basket, then stopped — which makes them far warmer than a cold marketing contact.
A simple 3-email abandoned cart sequence
1-2 hours after abandonment
A gentle reminder showing the exact item left behind, with a direct link back to checkout.
24 hours after abandonment
A follow-up that addresses common hesitations — free returns, delivery times, or reviews for the specific product.
48-72 hours after abandonment
A final nudge, optionally with a small incentive like free delivery, aimed at recovering the sale before the contact moves on.
Abandoned cart — first reminder
Subject: Still thinking it over? Your basket's waiting. Hi Priya, the Linen Throw you added is still saved in your basket. Stock is limited on this one — complete your order below whenever you're ready.
Post-purchase upsell flows
The period right after a purchase is one of the best times to sell again — the customer already trusts you and is actively thinking about your product. Post-purchase flows work best when the upsell is genuinely relevant to what was just bought, rather than a generic 'you might also like'.
Post-purchase upsell ideas
Back-in-stock alerts
When a popular product sells out, letting customers opt in to a back-in-stock alert captures demand you'd otherwise lose entirely. It also gives you a clean, high-intent list to email the moment stock lands — these emails routinely get some of the best engagement of any automated flow, because every recipient asked for it specifically.
Back-in-stock alert
Subject: It's back — the Oak Coffee Table is available again Good news, the Oak Coffee Table you were waiting for is back in stock. It sold out fast last time, so if you still want one we'd grab it now.
Order confirmations vs marketing emails
An order confirmation is a transactional email — the customer just bought something and expects to be told it's on the way, regardless of whether they've opted into marketing. It should never be blocked by a marketing unsubscribe, and it shouldn't be turned into a promotional email dressed up as a receipt.
Keep the two separate
A large discount banner inside an order confirmation blurs the line between transactional and marketing content, which can create both compliance and deliverability issues. Keep the confirmation focused on order details, and send any related offer as its own, separately-consented marketing email a few days later.
What belongs in an order confirmation
“The best e-commerce email programmes aren't the ones sending the most campaigns — they're the ones with abandoned cart, post-purchase, and back-in-stock flows quietly running in the background on every single order.”
Havari lets you build these flows visually once — abandoned cart, post-purchase upsell, back-in-stock — and they trigger automatically from your store activity from then on, with order confirmations kept as a separate transactional flow so a marketing opt-out never blocks a receipt.
How long should I wait before the first abandoned cart email?
One to two hours works well for most stores — long enough that it doesn't feel instant, short enough that the product is still fresh in the customer's mind.
Should back-in-stock alerts require a fresh opt-in?
Yes — a customer asking to be notified when a specific product restocks is a clear, specific action, and that request should be treated as its own opt-in rather than assumed from a general newsletter signup.
Can I combine an order confirmation with a review request?
It's better to send the review request as a separate email a week or two later, once the customer has actually received and used the product, rather than bundling it into the initial confirmation.