> ## Documentation Index
> Fetch the complete documentation index at: https://help.getvero.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Understanding campaign metrics

> What each campaign metric means: delivered, opened, clicked, converted, and unsubscribed.

Vero reports on several key metrics with every campaign.

**Customers:** The number of customers sent your email.

**Delivered:** The number of customers that your email was successfully delivered to.

This statistic is a percentage of the total customers who were sent the email.

**Opened:** The number of customers who open your email.

This statistic is a percentage of the total number of customers who were delivered the email.

*This is tracked by an invisible image that is loaded into each email sent. If a customer has images disabled then the open can not be recorded.*

**Clicked:** The number of customers who click any link in your email.

This statistic is a percentage of the total number of customers who were delivered the email.

*We also report the number of clicks on individual links in your email.*

**Converted:** The number of customers who carry out the intended action after receiving your email.

This statistic is a percentage of the total number of customers who were delivered the email.

*Take a look at[how conversions are defined](/vero-1/reports/conversion-tracking).*

**Unsubscribed:** The number of customers who opt out of receiving further emails from you.

This statistic is a percentage of the total number of customers who were delivered the email.