## Membership: Overview

### What it is

The Membership tool in My Workspace is where you can join and unjoin available worksites.

### Key concepts

Sites: On the Membership tool page, you'll see a list of all the worksites to which you belong. This includes sites you have joined, and sites that you have been added to as a participant by the creator of the site.

Joinable Sites: The `Joinable Sites` link will display a listing of available sites that you haven't joined. You can click `Join` for any of these sites.

### Things to consider

- By default, you will receive email notification about announcements, email, and resources that are posted to worksites to which you belong.
- You can change your preferences so that you receive this notification as a daily digest, or you can block these messages. For more information, see Changing notification preferences.