*Mailchimp primarily uses Unique Click Rate for reporting campaign performance.
function calculateMailchimpRate() {
var sent = parseFloat(document.getElementById('mcTotalSent').value);
var bounced = parseFloat(document.getElementById('mcBounced').value);
var unique = parseFloat(document.getElementById('mcUniqueClicks').value);
var total = parseFloat(document.getElementById('mcTotalClicks').value);
if (isNaN(sent) || sent < 0) sent = 0;
if (isNaN(bounced) || bounced < 0) bounced = 0;
if (isNaN(unique) || unique < 0) unique = 0;
if (isNaN(total) || total sent) {
alert("Bounced emails cannot exceed total sent emails.");
return;
}
if (unique > (sent – bounced)) {
alert("Unique clicks cannot exceed delivered emails.");
return;
}
// 1. Calculate Delivered Emails
// Mailchimp excludes bounces from the denominator
var delivered = sent – bounced;
// 2. Calculate Unique Click Rate (Standard Mailchimp Metric)
// Formula: (Unique Clicks / Delivered Emails) * 100
var uniqueRate = 0;
if (delivered > 0) {
uniqueRate = (unique / delivered) * 100;
}
// 3. Calculate Total Click Rate
// Formula: (Total Clicks / Delivered Emails) * 100
var totalRate = 0;
if (delivered > 0) {
totalRate = (total / delivered) * 100;
}
// Display Results
document.getElementById('resDelivered').innerText = delivered.toLocaleString();
document.getElementById('resUniqueRate').innerText = uniqueRate.toFixed(2) + "%";
document.getElementById('resTotalRate').innerText = totalRate.toFixed(2) + "%";
document.getElementById('mcResults').style.display = 'block';
}
How Does Mailchimp Calculate Click Rate?
Understanding your email marketing metrics is crucial for optimizing your campaigns. If you use Mailchimp, you may have noticed different metrics related to clicks. The most prominent metric is the Click Rate, but it is essential to understand exactly how the platform derives this number to interpret your data correctly.
The Core Formula
Mailchimp calculates the click rate based on delivered emails, not just the total emails sent. This distinction is vital because it prevents bounced emails (which never reached an inbox) from artificially lowering your engagement score.
Total Sent: The raw number of emails you attempted to send to your segment or list.
Bounced: Emails that could not be delivered (both hard bounces and soft bounces). Mailchimp subtracts these from the total to determine the "Delivered" count.
Unique Clicks: The number of individual subscribers who clicked a link in your campaign. If one person clicks a link 10 times, it counts as 1 unique click.
Unique Clicks vs. Total Clicks
It is important to distinguish between the standard "Click Rate" and "Total Clicks."
1. Unique Click Rate (The Standard)
This is the percentage shown on your main campaign report. It answers the question: "What percentage of my audience engaged with my content?" It removes the noise of a single enthusiastic user clicking a link repeatedly.
2. Total Click Rate (Click Volume)
Sometimes referred to as Click-Through Rate (CTR) in broader advertising terms, this metric accounts for every single click. If a subscriber forwards your email to three friends and they all click, or if a subscriber re-opens the email later to click again, the total click count rises. While Mailchimp reports "Total Clicks," the primary percentage is usually based on unique interactions.
Why Does Mailchimp Exclude Bounces?
Excluding bounces provides a fairer representation of your content's performance. If you send 1,000 emails and 200 bounce due to old addresses, your content only had the opportunity to be seen by 800 people. Calculating clicks against the full 1,000 would penalize you for list hygiene issues rather than content issues.
Example Calculation
Let's say you send a newsletter with the following stats:
While click rates vary significantly by industry, a good benchmark for Mailchimp users across all industries generally hovers between 2% and 3%. Highly segmented lists often see higher rates, while broader, unsegmented blasts may see lower engagement.