A rule audience allows to create an audience based on specific rules that apply to contacts.
To create the rule, click on Your Account on the top menu and then on Settings.
The click on Audiences on the left menu.
Then click on the New Audience green button. In the new screen enter:
Name: the audience name.
Entity Type: what type of entities the audience will contain.
Include all contacts: indicates to include all contacts in the audience. Only tick this if you're looking to create an audience for all contacts.
Description: a description of the audience.
Configuring the audience rule
To configure a rule, click on the Edit Rule button.
In the rule screen, enter what rules will define the audience. All rules available to filter contacts are available in the audience.
You can create rules like:
By contact type: select all contacts with a specific contact type.
Category expired: select all contacts that contains a specific expired category.
By email: select all contacts with which have an email containing a specific domain.
By location: select all contacts within a specific location.
By time zone: select all contacts with a specific time zone.
Custom fields: select all contacts that have a custom field value.
Then click Save.