Email Open Rate Calculator

Email open rate formula

Email Open Rate = (Number of Opened Emails​/Number of Sent Emails) × 100

Understanding the email open rate result

On average, a 15-25% email open rate is considered a good open rate. However, this number can vary greatly depending on the type of email you send, the kind of industry you’re in, etc. In general:

• A high email open rate indicates that your subject lines are effective and your content is relevant to your audience.
• A low email open rate may indicate that your subject lines are not compelling enough, you are reaching out to the wrong audience or your emails are going to the spam folder. Emails landing in the spam folder also reflect poor email deliverability.

When to calculate email open rate

Email open rate should be calculated in the following situations:

• After each email campaign that you send
• While conducting A/B testing for various subject lines
• While comparing engagement across different segments of your email list
• When evaluating the right day and time to send your email campaigns
• Before and after implementing new email content strategies

How to calculate Email Open Rate with example

Let’s say that you sent an email campaign to 8,000 subscribers and 1,600 of them opened the email. Your email open rate can be calculated as follows:

Email Open Rate = (Number of Opened Emails​/Number of Sent Emails) × 100

Email Open Rate = (1,600/8,000)×100 = 20%

In this example, your email open rate is 20%, indicating that 20% of recipients opened your email.