Is your feature request related to a problem? Please describe.
I use FGI to invite people for the guild. Sometimes I do maybe 5-10 whispers, it opens that many windows and it feels my screen!

Describe the solution you'd like
Simple boolean in code and then on the settings that we can choose not to open a window as soon as you whisper but only when you get whispered back!

Describe alternatives you've considered
Since it's a simple solution and it feels like something easy to add I have not thought of alternatives since it's not a complex issue.

Additional context: