CPC

CPC (cost per click) is an ad pricing model where advertisers pay only when a subscriber actually clicks their ad. Unlike CPM, where payment is based on impressions regardless of engagement, CPC aligns advertiser cost with demonstrated interest. In newsletter advertising, CPC is less common than CPM or flat-fee sponsorships — the primary reason is that click tracking in email is imprecise (bot clicks, preview pane triggers) and newsletter publishers prefer impression-based pricing that doesn't depend on click measurement accuracy. MailAdx supports both CPM and CPC bidding. For advertisers, CPC can be advantageous when audiences are wide and intent is uncertain; for publishers, CPM usually yields higher effective revenue.