> For the complete documentation index, see [llms.txt](https://eventx-hq.gitbook.io/knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eventx-hq.gitbook.io/knowledge-base/outreach-channel/email-analytics-and-optimization/opened-and-clicked-rates.md).

# Opened and Clicked Rates

## Opened and Clicked Rates

## How are open rates measured?

In order to track if an attendee has opened the email, a tiny transparent image is inserted in our email template. Once the attendee opens the email, the image will be loaded by the email client, therefore, making it count as an opened email.

## Untracked email opens

There is a chance that the email client does not load the transparent image and therefore, leading to the email not being marked as opened. This explains why our system will show that some attendees have not opened the email but have clicked on the links within an email.\
![](/files/m3gzRe9V18TGI6pwc7ZQ)\
The following are common email clients that are known to automatically block the images from loading.

1. Apple Mail
2. Google Gmail
3. Microsoft Outlook
4. Mozilla Thunderbird

## How are click rates measured?

As long as any link within the email is clicked, the email address will be marked as clicked.

## Frequently Asked Questions

### Q: How does EventX track email open rates?

**A:** A tiny transparent image is inserted into email templates. When an attendee opens the email and the image loads, it registers as an opened email.

### Q: Why might an email show as "not opened" but still show clicks?

**A:** Some email clients (Apple Mail, Gmail, Outlook, Thunderbird) automatically block images from loading. This prevents the tracking image from loading, so the open isn't recorded even though the attendee actually opened and clicked links.

### Q: What counts as a "clicked" email?

**A:** Any link within the email that is clicked will mark the email address as clicked.