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by mc7457 3874 days ago
Whatsapp never supported this "fundamental feature" and is globally the most used messenger in "todays mobile world" by a wide margin.
1 comments
heinrich5991 3874 days ago
Whatsapp is built on XMPP I believe. :)
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colanderman 3874 days ago
A closed proprietary non-interoperable extension on XMPP.
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