- A megabyte (MB) is approximately a million (mega) bytes. To be precise, a megabyte is exactly 1,048,576 bytes (2 to the power of 20). Many commercial computer programs contain between 1-5 MB of data, plus extra files, often reaching 20-30 MB.
- A mailbox is the place where e-mail resides ready to be read after it has been downloaded from the mail server.
- An Business Internet Member is someone who has subscribed to the Business Internet service.
- Messenger is the component of Netscape Communicator that is used to read and send e-mail.
- Microsoft Internet Explorer
- Internet Explorer is Microsoft's Web browser that allows the user to view Web pages.
- MIME (SMIME)
- MIME is a way to send messages over the Internet that do not use standard keyboard characters. SMIME is a new, secure (hence the added 'S') version of MIME that makes use of encryption. MIME is an acronym for Multipurpose Internet Mail Extension.
- A combined form of 'modulator-demodulator', a modem is a device that allows computers to transmit data over telephone lines.
- Mosaic is an early Web browser originally developed by the National Center for Supercomputing Applications.