The number of message recipients who open an email. In your GetResponse account, you’ll see the open rate as a percentage. We calculate it by dividing the number of email messages opened by the total number of email messages delivered. We don’t include bounced messages in your open rate.
You can use this information to analyze your email performance. When you understand your open rate, you can come up with better targeting in your email marketing strategies and keep your business growing.
We only calculate the open rate for HTML messages