Mailing list program

I am looking for a program that runs under Windows 95 and works like a mailing list. I want to handle approximately 150 or 200 mail accounts and deliver a message from sender to the others. Does any one suggest me such a program? -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6 mQByAzNQynwAAAEDIwXbyxWEggWIqhh9Y6LqDOnI4WTFf1F26ZIBbOAkFTdvbOr1 1qf+Vld1IFWdPeHWrTT9X542Nej6qi3soVJRgLesINLBG2O6ADCd9MkoJDYrqxdk fZrO0Lu1Bthm7/rCSRp523PxAAURtBZrYXlyYSA8a2F5cmFAdHVyay5uZXQ+ =nRRP -----END PGP PUBLIC KEY BLOCK-----