Cookie Consent Banner
A legally driven notice asking the visitor to accept or reject non-essential cookies before they are set, distinct in purpose and rules from a marketing popup.
A cookie consent banner exists to satisfy privacy law, principally the EU's ePrivacy rules and GDPR, the UK equivalent, and a growing set of US state laws. It must appear before non-essential cookies or tracking scripts run, offer a real option to decline, and record the decision. Google's intrusive interstitial guidance treats legally required interstitials such as cookie consent as acceptable, so it is not the ranking concern a marketing overlay can be.
A marketing popup is optional, driven by your goals rather than the visitor's rights, and should follow the consent decision rather than compete with it. Two overlays at once is the worst outcome: the visitor cannot tell which to deal with first, and the offer reads as noise. Show the consent banner first, then let the marketing popup trigger after a decision has been recorded.
In practice that means loading the popup script, or at least setting its frequency-capping cookie, only after consent where your consent tool requires it, and keeping the two visually distinct so neither borrows the other's authority. A consent banner styled like a promotion undermines trust, and a promotion styled like a legal notice invites complaints.
See it in practice