Hello Team, I noticed that when sending reply emails via Thunderbird email application, Thunderbird is automatically adding characters in reply which are visible only after email is sent. For example, I have seen below two characters being introduced on two separate occasion. It appears that these characters are replacement of what some spaces from original emails from sender. 1) � 2) ?? Attached is screenshot of the two emails from sent folder. Please advise why this happens and how to fix it. Thank you Parry