Email click-through rate is the percentage of delivered emails in which the recipient clicked at least one link. If you deliver 10,000 emails and 250 people click something, your CTR is 2.5%. Most platforms use unique clicks, so a person who clicks five links is counted once. Total clicks, which count every click, are useful for link reports but not for the rate itself.
CTR has become the most dependable everyday measure of email engagement. Opens can be inflated by privacy features and image proxies; clicks still need a human to tap a link. Mailbox providers also treat clicks, replies and similar actions as positive signals, so content that earns clicks helps future emails reach the inbox.
What drives CTR is mostly relevance and clarity. One clear main action usually beats a dozen competing links. Buttons that describe the outcome (“See the new menu”, “Book my seat”) tend to work better than “Click here”. Segmented sends nearly always outperform the same email sent to everyone, because the offer fits more of the people who receive it.
Watch for distortions. Some corporate security filters click every link to scan it, which can create bursts of clicks within seconds of delivery, especially on B2B lists. And a high CTR on its own isn’t the goal: an email whose clicks lead nowhere useful has a good CTR and a poor result. Pair CTR with conversion rate or revenue to see the full picture.
A Lucknow bakery sends its weekly menu to 4,000 subscribers; 3,920 are delivered and 118 people click, a CTR of about 3%. The next week it splits the list by area and shows only outlets nearby, and CTR rises to just over 4%.
MailNesto campaign reports show click rate alongside opens, with a click map of every link and button, and you can compare two to four campaigns side by side.