A message is a piece of a communication. There are multiple types of messages: including biological messages (such as pheromones or warning signals), electronic messages (such as emails or programmatic messages), human messages (such as sentences or gestures), and certain others.
In communication between humans, messages can be verbal or nonverbal:
- A verbal message is an exchange of information using words. Examples include face-to-face communication, telephone calls, voicemails, etc.
- A nonverbal message is communicated through actions or behaviors rather than words, e.g. by the use of body language.
There are two main senses of the word "message" in computing: messages between the human users of computer systems that are delivered by those computer systems, and messages passed between programs or between components of a single program, for their own purposes.
- Instant messaging and e-mail are examples of computer software designed for delivering human-readable messages in formatted or unformatted text, from one person to another.
- Message passing is a form of communication used in concurrent and parallel computing, object-oriented programming, and interprocess communication, where communication is made by sending messages to recipients. In a related use of this sense of a message, in object-oriented programming languages such as Smalltalk or Java, a message is sent to an object, specifying a request for action.
- Amateur radio emergency communications
- Communications satellite
- Communication studies
- Drum (communication)
- Emergency Alert System
- Express mail
- Instant messaging
- Interstellar messages
- Message in a bottle
- Packet (information technology)
- Pioneer plaque
- Pony Express
- Sign language
- Smoke signals
- Text messaging
- Wind-powered shipping
- Media related to Messages at Wikimedia Commons