"Get IBM Notes Mail Messages " Activity reads mail body in incorrect format

Hello! I am facing below issue -
I am using "Get IBM Notes Mail Messages " Activity for reading emails from inbox of IBM Notes. For some emails I am getting incorrect format of data like this -
Pg0KPHRib2R5Pg0KPHRyPg0KPHRkPjxmb250IGZhY2U9IkFyaWFsLCBIZWx2ZXRpY2EsIHNhbnMtc2VyaWYiIHNpemU9Ii0xIiBjb2xvcj0iIzQ0NDQ0NCI+RGVhciBTaXIgLyBNYWRhbSw8L2ZvbnQ+DQo8L3RkPg0KPC90cj4NCjx0cj4NCjx0ZD48Zm9udCBmYWNlPSJBcmlhbCwgSGVsdmV0aWNhLCBz "
I have seen those emails have IsBodyHtml = true, means they are in form of Html due to this not getting correct output of Mail Body.
Has anyone faced this problem? How to resolve this? Thank you in advance.

Hello All !!!
Has anyone any idea about this? Please help.
I think Get IBM Notes Mail Messages Activity gives output in incorrect format. One more point is Other mail messages (like IMAP) activities support item.Headers(“HTMLBody”).Tostring it will give you correct mail body, but in IBM Mail messages activity, from which returned mailmessage item for that I can’t use Headers(“HTMLBody”). As there is no any parameter like this in Headers.
Any idea also about it? Any replacement for this?