2400 & higher baud speed modem, working phone line, computer, maybe online service featuring email service or self ruuning email service program.
Know where to put email address, subject and note.
1) Use a computer that is connected to an online service or email service and email an inquiry to a company or college or a letter to a friend of your choice. Make sure that each addressee use different servers (e.g. after the @ symbol aol.com, compuserve.com, ix.netcom.com, nyu.edu, etc.).