Deceased and gone away checks are included as part of ZAP~POST's data cleansing process. These checks are performed against a list of 3rd party services/agencies.
Deceased services/agencies
The Bereavement Register
MPS (Mailing Preference Service)
Mortascreen
Gone Away services/agencies
GAS (Goneaway Suppression File)
Information Works Goneaway
NCOA Suppress (National Change of Address)