Match2One measures two types of conversions:
What is a post-view conversion?
Post-view conversion means that an internet user has seen your ad, and then converted without ever clicking the ad.
This is a common behavior and usually means that a user saw an ad, opened up a new browser window, and either googled or went directly to your site to complete the purchase/conversion.
For post-view conversions, by default, we follow the user's behavior for seven days after they have seen the ad.