Campaigns can target countries and desktop, tablet, or mobile devices. You can also set daily and lifetime view limits.
Hourly Unique
The same visitor may qualify again 60 minutes after their last qualified view for the same campaign.
Daily Unique
The same visitor may qualify again after a rolling 24-hour period.
Campaign Unique
The visitor may qualify only once for the campaign.
Frequency is enforced per campaign, so the same visitor may qualify for different campaigns in the same session when each campaign is otherwise eligible.