Impressionwise Email Verification and Spam Trap Removal

Threat Intelligence Center


Dormant Accounts

Detection of popular webmail HAMY (Hotmail, AOL, MSN, Yahoo) and other top provider intelligence honeypots designed as an internal network defense system to detect level of engagement.

Email addresses are not permanent. When there has been no login activity for a long period of time, the recipient account is defined by the provider as “inactive” and turned into a form of unknowing collaborator with no non-delivery report (NDR) indicating “no such user” or “mailbox not found” being sent as a response. Thus any email sent during this period of time before account deactivation is assumed, in the collective, as spam and its email signature mapped and used to block any email to other active recipient accounts within the domain.


The recognized authority in email verification
and list cleaning services

With an average of 110,000 new email-based threats found each month, Impressionwise makes it easy for potential clients to evaluate our list cleaning services by offering a complimentary scan and report for a sample set of your data to illustrate the benefits of our services.

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