Graymail is bulk email that does not fit the definition of spam because it is solicited, comes from a legitimate source, and has varying value to different recipients. Examples of graymail can be periodic newsletters, announcements, or advertisements targeted for a recipient’s specific interests. Graymail recipients have previously “opted in”, either knowingly or unknowingly, to receive this type of mail, although the value of the mailing may have decreased over time.
In enterprise organisations, graymail can be difficult to manage as some recipients want to receive such messages while others may perceive them as spam. For example, a recipient in the marketing department may elect to receive updates on industry conferences while an employee in human resources may see these mailers as spam.