> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.wanotifier.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Contact Lists, Tags and, Custom Attributes

[__Contacts__](https://app.wanotifier.com/contacts/) have various properties you can use to manage and organize them, including lists, tags, and custom attributes. Here’s a brief explanation of each:

### Contact Lists

Contact Lists are simple groups where you can organize your contacts for better management. Each list can contain multiple contacts. For example, you might create lists like **Existing Customers**, **Event Attendees**, or **Facebook Leads**.

In WANotifier, you can use [__Contact Lists__](https://app.wanotifier.com/contacts/lists/) to send [bulk broadcasts](https://help.wanotifier.com/en/article/create-a-bulk-broadcast-notification-1hes042/) to specific groups of contacts.

### Contact Tags

Tags are labels that you attach to individual contacts for identification or grouping purposes. For example, you can tag a contact as “**prospect”**, and then another contact can be a **“hot lead”**, or a **“paid user”**.

Tags allow you to segment contacts based on their intent or behavior, making it easier to segment your audience.

### Custom Attributes

Custom Attributes are additional metadata fields you can use to store extra details about your contacts.  For example, **city**, **state**, **date_of_birth**, **website_url**, **pan_number,** and so on.

Basically, any additional information that you want to store in the contacts can be stored as a custom attribute.

Now that you know how to organize and segment your contacts using lists, tags, and attributes, let’s look at how to manage their **subscription preferences** for your messaging lists and newsletters using [__Contact Status__](https://help.wanotifier.com/en/article/understanding-contact-status-subscribed-and-unsubscribed-14c1ec0/).