https://connect.tt.com.pl/space/display/~maciejewskid/23.04.2018%2C+24.04%2C+25.04%2C+26.04%2C+27.04%2C+8.05%2C+9.05%2C+30.05%2C+20.06++-+tasks+for+today - pod 20.06 jest wyjaśnione czemu nie moge kontunuować (MT-373 blokuje)
When no threading is set, it is possible to view sent emails with their replies in similar manner as presented below:
%20-%20View%20of%20a%20sent%20email%20and%20its%20replies.png?version=1&modificationDate=1531996220066&cacheVersion=1&api=v2&height=400)
As you can see, original message who has replies is marked with an arrow (1) that does not differ from a message with a reply (2).