Unique Opens
Unique opens is the count of individual people who opened your email at least once. Each person is only counted one time, even if they open the same email many times.
Unique opens tells you how many different people looked at your email. It ignores repeat opens from the same person. If someone reads your email three times, they still only count as one unique open. This keeps the number focused on real people, not total views.
This number matters when you want to understand your true reach. It helps you see how many people actually saw your subject line and content. You can compare unique opens between campaigns to spot what performs better. Over time it also shows if your audience is staying engaged or starting to tune out.
Use unique opens to test subject lines, send times, and list quality. Track the trend over several sends instead of worrying about a single email. If the number keeps dropping, review your targeting, content, and sending frequency. Small steady gains in unique opens usually mean your email strategy is moving in the right direction.
Related Terms
Unique Clicks
The number of unique subscribers who click at least one link in your email. Each person is counted once, even if they click several times.
Learn more →Batch Email(Batch Send)
Batch email is when you send the same email to many people at once. Your email platform sends it in groups so you can reach a large list without hurting deliverability.
Learn more →Email Client(Email Program)
Software or apps people use to read, send, and manage email, such as Gmail or Apple Mail. Different email clients can display the same email in different ways, which affects how your emails look and perform.
Learn more →Send Time Optimization(STO)
A feature that chooses the best time to send each email based on when a person usually opens and clicks your messages.
Learn more →