Electronic messaging

Electronic messaging may refer to:

One-to-one-communication

• Instant message (on a computer network)
• Personal message (on a computer network)
• Text message (on a cellular phone network)
• SMTP (on a computer network)
• Email (on a computer Network)
• Voicemail (using the PSTN)
• Fax (using the PSTN)
• Pager (using the PSTN)

One-to-many communication

• Bulletin board system (on a computer network)
• Internet forum (on a computer network)
• Usenet newsgroup (on a computer network)