# Track Invoice opens/Email opens

The app allows you to track customer email activity in two ways:

1. **Customer email open tracking (Step 5)** - This feature tracks the last date the customer opened the email.
2. **Invoice PDF link tracking (Step 3)** - This feature tracks the last date on which the customer opened the invoice PDF using the 'view PDF' link in the email reminders. 

Together, these features can help you track whether the customers are receiving and viewing the invoice reminders.

<figure><img src="/files/DZfi7tRhc2YKuYTHBjj7" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://help.payorcrm.com/manual-collections/track-invoice-opens-email-opens.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.