High Quality Content by WIKIPEDIA articles! Netscape Mail and Newsgroups, commonly known as just Netscape Mail, was an email and news client produced by Netscape Communications Corporation as part of the Netscape series of suites between versions 4.5 to 7.2. It was previously two separate programs known as Netscape Messenger and Netscape Collabra between Netscape Communicator 4 and 4.5.