Impressionwise is a data hygiene provider specializing in cleansing data. The service is used for email verification by identifying spam traps and complainers. Data is scanned on-demand against a global view of real-time feedback at the time of the actual cleansing, utilizing no data from aged repositories.
The Impressionwise Data Feed Platform provides batch cleansing of email addresses in real-time. The platform is exposed via a RESTful API. Public documentation is not avaialable.