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**Why promote “free messengers” instead of tolerating “WhatsApp”, for example?

Reason 2: Adherence to standards

Free messengers are based on public “protocols” that describe the technical basis for the regulated exchange of instant messages:

  • E-mail messenger: “SMTP” and “IMAP” protocols
  • Jabber messenger: “XMPP” protocol
  • Matrix messenger: “Matrix” protocol

Some commercial applications use public protocols, but their function is deliberately modified and limited so that communication is only possible within the user’s own network. WhatsApp, for example, uses an XMPP that has been “adapted” for its own purposes.

Which protocols are used by other (island) solutions such as Stashcat, Telegram, etc.? This is often a company secret and therefore not publicly visible or verifiable for third parties.

Explanations of the protocols

Protocol “SMTP “ (since 1980 / origin: 1971)
* Abbreviation: “Simple Mail Transfer Protocol”
* Translation: “Simple e-mail transport protocol”
* Wikipedia: (external)

Protocol “IMAP “ (since 1980)
* Abbreviation: “Internet Message Access Protocol” / originally “Interactive Mail Access Protocol”
* Meaning: “Network file system for e-mail”
* Wikipedia: (external)
* Supplementary information: (external)

Protocol “XMPP “ (since 1998)
* Abbreviation: “Extensible Messaging and Presence Protocol”
* Translation: “extensible messaging and presence protocol”\ * External information: (external)

Protocol “Matrix “ (since 2014)
* Meaning: -proper name-
* Translation: Protocol for real-time communication
* Wikipedia: protocol) (external)