Open rate vs click rate: which email numbers really matter

After every email, your email tool shows you a report full of numbers. It is tempting to focus on the biggest one, usually the open rate. But open rates have become less reliable, and other numbers often tell you more about whether your emails are working.

Open rate

Open rate is the share of people who opened your email. Email tools measure this with a tiny invisible image. When the image loads, the email counts as opened.

The problem is that some email apps now load images automatically, for privacy reasons, even if the person never reads the email. Apple Mail is the best known example. This means many "opens" are not real people reading.

So treat open rate as a rough signal, not a fact. It is still useful for comparing your own emails over time, especially subject line tests, but do not celebrate or panic over it alone. Some tools let you filter out these automatic opens, often called machine opens. Use that option if you have it.

Click rate

Click rate is the share of people who clicked at least one link in your email. Clicks are much harder to fake, so this number is more reliable.

There are two versions you may see:

• Click rate: clicks compared with everyone who received the email.
• Click to open rate: clicks compared with people who opened. This tells you how good the email content was once opened. Because opens are less reliable now, use it with care.

Unsubscribe rate

The share of people who unsubscribed after an email. A few unsubscribes after each send is normal and healthy. People who are not interested should leave. A sudden spike tells you something about that email, such as the topic, the timing or how often you are sending.

Spam complaint rate

The share of people who clicked "report spam". This one matters a lot. Inbox providers watch it closely. Keep it well below 0.1 percent, which is fewer than one complaint per thousand emails.

Bounce rate

The share of emails that could not be delivered. A high bounce rate usually means your list has old or mistyped addresses.

Replies

Many tools do not show replies in reports, but they are one of the best signs of a healthy list. A reply means someone read, cared and took the time to respond. If you can, invite replies and count them.

Conversions

The number that matters most is what people do after the click: buy, book, sign up or download. Connect your email tool with your website or shop if you can, so you see which emails lead to real results.

Which numbers to watch

For most people, a simple weekly check works best:

• Click rate, to see if people found your email useful.
• Unsubscribes and spam complaints, to make sure you are not annoying people.
• Replies and conversions, to see real results.
• Open rate, only as a rough guide and for subject line comparisons.

Compare with yourself, not with averages

Industry averages vary hugely by type of business, list size and how they are measured. Your own numbers over time are far more useful. If your click rate is slowly rising, you are doing something right.

The short version

Opens are a rough guide now. Clicks, replies and real results tell the truth. Watch spam complaints and unsubscribes to stay healthy, and always compare your numbers with your own past emails.