> For the complete documentation index, see [llms.txt](https://docs.sortment.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sortment.com/engage/audiences/campaign-event-filters.md).

# Campaign Event Filters

The **Campaign Event Filters** feature enables users to define audience segments based on their engagement with various campaign touchpoints, including **email interactions, SMS engagements, WhatsApp activities etc**. These filters allow precise targeting for personalized messaging based on whether users are interacting with previous communication or not.

### Available Filters

#### **Email Engagement**

* **Email Sent**– Users to who email is sent.
* **Email Delivered** – Users to who email is delivered.
* **Email Opened** – Users who opened an email.
* **Email Link Clicked** – Users who clicked a link in an email.
* **Email Bounced**– Users for which email bounced.
* **Email Unsubscribed** – Users who unsubscribed from email communications.

#### **SMS Engagement**

* **SMS Delivered** – SMS messages that were successfully queued for delivery.
* **SMS Link clicked** – Users who clicked a link in an SMS.

#### **WhatsApp Engagement**

* **WhatsApp Message Read** – Users who read a WhatsApp message.
* **WhatsApp Link Clicked** – Users who clicked a link in a WhatsApp message.

### Filter types

For each event, users can define audience segmentation using the following conditions:

* **Event Performed X Times** – Filters users based on the number of times they performed a specific event. You can set comparisons to a specific counts, like performed "Email Opened" At Least / At Most / Exactly X times.
* **Event Not Performed** – Excludes users who have not performed the selected event.

### Sub-filters

Each event filter includes contextual sub-filters for additional refinement:

* **Campaign-Specific Filtering** – Users can filter events based on the campaign they were associated with. You will see list of all campaigns sent via Sortment.
* **Time Windows** – Users can set conditions to filter events that occurred within a specific timeframe (e.g., last 7 days, last 30 days).