Email conversion rate is the percentage of recipients who complete the action you wanted after receiving an email: buying, booking, registering, downloading or upgrading. It is usually calculated as conversions divided by delivered emails, though some teams divide by clicks to measure how well the landing page or store converted the visitors an email sent.
Conversions happen outside the inbox, so measuring them needs a link between the email and the action. The two common methods are revenue tracking, where the store or app reports orders back to your email platform, and UTM parameters on links, which let analytics tools attribute visits and sales to a campaign. Each uses an attribution window, such as orders within a few days of a click, so be clear about which window your numbers use.
Conversion rate is closer to business results than opens or clicks, which makes it the metric to judge campaigns and automations on. An email with a lower click rate can still be the better campaign if more of its clickers buy. Comparing revenue per email sent is a useful companion figure for stores.
Most improvements come from what happens after the click. The landing page should match the email’s promise, load fast on a phone, and make the next step obvious. For Indian shoppers, showing UPI and cash-on-delivery options, delivery times and a clear returns policy near the button often matters as much as the email itself.
A spice brand in Kerala sends an Onam offer to 20,000 people. 600 click and 90 place orders. The conversion rate is 0.45% of delivered emails, or 15% of clicks. The orders total ₹1,35,000, about ₹6.75 per email delivered.
MailNesto attributes orders and revenue from connected stores to campaigns and automations, automation goals count conversions directly, and you can add UTM tags to campaign links for your analytics tool.