The National Change of Address (NCOA®) suppress is a database file that continue people who have moved away, or moved house and a list of the deceased. This is gathered by the Royal Mail.
Why does NCOA Suppress do?
When someone moves house and gets their mail redirected they are added to both NCOA® Update and NCOA® Suppress files, if the person does not agree to let third parties know their new address then they are added to the NCOA® Suppress file only. Public and private data is also used to compile a list of recent deceased. The set is complemented from companies who contribute their returned mail to NCOA® Suppress and there are over 40 million records in the NCOA® Suppress data file.
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