How do I calculate the right timing for replenishment emails?

Determine how long each product typically lasts. For a 30-day supply, send the first reminder on day 23-25. Account for shipping time so the customer receives the reorder before running out. For products with variable consumption (like coffee), average the reorder intervals of your existing customers.

What conversion rates do replenishment emails achieve?

Replenishment emails typically see conversion rates of 10-15%, significantly higher than standard promotional emails. Some stores report even higher rates for essential consumables like pet food and supplements where running out is not an option.

Should I include a discount in replenishment emails?

Generally, no. Replenishment emails are serving existing demand, so discounting is not necessary and eats into margins. Instead, offer free shipping or promote a subscribe-and-save option with a modest discount. Save discounts for win-back emails when someone has not reordered after their product should have run out.

What is Replenishment Email? - Definition & Guide

Definition

A replenishment email is an automated message that reminds customers to reorder products that get used up over time. The timing is based on the product's typical consumption cycle: a 30-day supply of vitamins triggers a reminder around day 25, a bag of coffee that lasts two weeks triggers one around day 12. These emails drive consistent repeat revenue by catching customers at the exact moment they need to reorder.

Why It Matters

Replenishment emails are among the highest-converting automated emails in e-commerce because they arrive when the customer actually needs the product again. Unlike promotional emails that create demand, replenishment emails serve existing demand. They are especially valuable for consumable products like food, supplements, beauty products, pet food, and household supplies.

How It Works

After a purchase of a consumable product, the system waits a calculated number of days based on the product's typical usage duration, then sends a reorder reminder. Advanced platforms use purchase history to predict individual consumption rates. Simpler implementations use fixed timing based on the product's standard supply duration. The email includes a one-click reorder link and often a subscribe-and-save offer.

Best Practices

1Map out the consumption cycle for each of your products to set accurate timing
2Send the first reminder 5-7 days before the product runs out, not after
3Include a one-click reorder link that takes the customer directly to checkout
4Offer a subscribe-and-save option to convert reorders into automatic subscriptions
5Build a 2-3 email sequence with increasing urgency if they do not reorder
6Adjust timing based on individual purchase patterns for returning customers