Ecommerce email divides cleanly into campaigns, which are sent to a list on a date, and flows, which are triggered by what a customer did. For most stores the flows produce the larger share of revenue per hour of work invested, and they are the part that is either set up properly once or quietly broken for years. An agency that opens with a campaign calendar is selling the more visible half.
The flows are the asset and there are only a handful that matter
Welcome, browse and cart abandonment, post-purchase, replenishment where the product allows, and winback. Each needs to be written for your product and your margin rather than installed from a template, and each needs reviewing as the catalog changes. Ask any prospective agency which flows it would build first for your store and why, and listen for whether the answer mentions your products.
Discounting inside flows is a margin decision, not a marketing one
Abandonment flows that open with a discount train customers to abandon, and the cost lands on gross margin rather than on the marketing budget where it is visible. Agree the discount policy with whoever owns margin before the flows are built, and ask the agency to model the revenue with and without. Agencies reporting email revenue rarely net off the discount they gave away to get it.
Attribution windows decide who gets credit for the same sale
Email platforms attribute generously by default, and the same order frequently appears in the email report, the paid social report and the analytics report. Before judging the program, agree the attribution window and whether it is click only or includes opens, which are now unreliable anyway. This one agreement prevents most disputes about whether email is working.
List health beats list size for a store
Sending to everybody who ever bought damages deliverability and flatters the list count. Sunset policies that stop mailing people who have not engaged, and segmentation by recency and category, do more for revenue per send than any creative change. An agency that has never proposed removing anybody from a list has not managed deliverability in a real store.
Consent and preferences are the part that scales badly later
Commercial email is governed by CAN-SPAM in the United States, requiring working opt-out, accurate headers and a postal address, and stores selling internationally face consent requirements beyond that. Getting the capture, the preference center and the suppression handling right early is far cheaper than reconstructing consent evidence after the list has grown.
Questions people ask about ecommerce email marketing agency
What share of ecommerce revenue should come from email?
Benchmarks circulate widely and are close to useless because they depend on purchase frequency, margin and how aggressively the store discounts. The more useful question is what email produces per hour of work and per dollar of discount given away, compared with your other channels. Ask the agency to report it that way.
Should the agency own our email platform account?
No. The account should be in your name with the agency granted access. The list, the flows and the historical performance are assets you paid for, and an account held by an agency is an asset you cannot take with you.
How quickly should flows show results?
Flows begin earning as soon as they are live and traffic hits the triggers, so the first meaningful reading is usually within weeks rather than months. Campaign programs take longer to judge because the results move with the calendar and the catalog.
Is SMS worth adding?
Often, and it sits under a stricter consent regime than email, so it should be set up deliberately rather than bolted on. Treat it as a separate channel with its own consent, its own frequency discipline and its own reporting, not as email with shorter copy.