Single#Chat#10: bob@example.net [bob@example.net] 🛡️
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Msg#10: info (Contact#Contact#Info): Messages are guaranteed to be end-to-end encrypted from now on. [NOTICED][INFO 🛡️]
Msg#11🔒:  (Contact#Contact#10): Heyho from DC [FRESH]
Msg#12: Me (Contact#Contact#Self): One classical MUA message  √
Msg#13🔒: Me (Contact#Contact#Self): Sending with DC again  √
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