CPC (cost-per-click) is the amount of money the advertiser is willing to pay per click. Bear in mind that Emailbidding only counts Unique Clicks for performance measurements and billing. The CPC also influences your campaign Factor that will be responsible for your campaign performance.

On EmailbiddingAdvertisers define how much they are willing to pay for each click, but Publishers can also define a minimum or maximum CPC for their database(s).

Also check “What is an unique click?“, “What are billable unique clicks?” and “What is the campaign factor