Search marketing firm Miva has launched a service that lets advertisers generate pay-per-click ad revenue through email newsletters or other correspondence, reports NetImperative (U.K.). Dubbed Miva Mail, the service embeds dynamic, content-relevant pay-per-click ads within standard HTML emails. Listings can be text only or include individual advertisers' logos or other images. Each time an email is previewed or opened, bid-controlled ads from the Miva network are displayed.