Email glossary

Conversion Rate

Conversion rate is the share of people who did what you wanted after getting your email.

A conversion is the action you were hoping for, like a purchase, a sign-up, or a booking. Conversion rate is the number of conversions divided by the emails delivered.

It is the truest measure of an email campaign, because it tracks real results rather than just opens and clicks.

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Last updated: June 25, 2026