Discount Code Strategy for Email

Definition

A discount code strategy for email governs when, how and to whom promotional discount codes are offered through email campaigns. Without a deliberate strategy, discount codes can condition subscribers to expect perpetual discounts, erode margin on customers who would have purchased at full price and make it impossible to determine whether email is driving profitable revenue or simply subsidising purchases.

A well-designed strategy segments discount usage by subscriber type, limits discount depth to the minimum effective level and tracks incremental revenue attributable to the code.

Strategic Decisions in Discount Code Usage

• Who receives codes: All subscribers, first-time buyers only, lapsed customers, VIP segments
• Discount depth: Percentage off, fixed amount, free shipping or bundle offer
• Code structure: Unique single-use codes versus shared codes, personalised versus generic
• Expiration: Urgency through expiry versus ever-green codes that reduce pressure but also reduce conversion
• Tracking: Unique codes enable per-subscriber attribution; shared codes require additional tracking logic

Best Practices

• Reserve the deepest discounts for re-engaging lapsed customers, not for acquiring subscribers who would have converted at a lower incentive
• Test discount depth systematically to identify the minimum effective discount — the point below which conversion drops sharply
• Use unique codes to track which campaigns, segments and discount levels produce the highest customer lifetime value, not just the highest immediate conversion rate
• Monitor the percentage of revenue coming from discounted versus full-price purchases; a rising discount dependency signals strategy drift