Public records are defined as all records, reports, forms, writings, letters, memoranda, books, papers, maps, photographs, microfilms, cards, tapes, recordings, electronic data processing records, recorded information and all other documentary materials, regardless of physical form or characteristics, having been prepared, or having been or being used, received, possessed or under the control of any public body. 5 ILCS 140/2(c). E-mail is treated as any other public record.