Thank you, Guy, was not aware as to what that was about, my guess was incorrect, or maybe 'hope?'

Yes, I do use the three panel Preview.  Will check out what you suggest.  Have also noted when opening the Tools/Options for reviewing the settings and various other features, there are not any of those three little boxes for expanding, iconizing, nor closing.  Clicking on that window or dragging and dropping it still will not produce those controls, even double clicking not work.

WOW!  What reading and understanding will do for you if it just would happen.  I have been looking in the PMail Preferences and settings for that Window you referenced, MenuBar/Window is where it is, just never looked up above the Icon Bar. DUA! Dummy!  That is a fantastic feature, READ the screen, not just what you want.  DA!! BAG! 

One last parting question, why when the Pegasus Icon is PINNED to the task bar the ICON for the open program is separate (?)  instead of combining the PINNED and the open Program? 

Hello, I am back again,

Icon bar between the Gold coin (Make a donation in support of Pegasus Mail) and the Pegasus (IERenderer - Pegasus Mail HTML Renderer) there is a Telephone Receiver with a 'i' in a blue dot.  "Compose a telephone message" seems there are not any instructions within the HELP for this feature.  Is this a method of sending a TXT message to a cell phone?  Plus when this is clicked upon the window that is open cannot be closed except by closing down Pegasus Mail.  The three small boxes in the upper right hand corner below the three for Pegasus Mail, one is red with a white "X", are not there to 'minimize', restore down, or close the "Compose a telephone message."  Or open the Tools/Options window then move the sliders for horizontal movement until the edge of that 'CTM' is visible then slide the vertical one until the top corner is shown to be able click the:"close" that window.  I am working from a Dell Inspiron 1564 Laptop with a screen size of 15.1 inches diagonally.  If I had a 42" monitor it would still be a problem because of the video driver is for a small screen.

Telephone Message is the electronic version of "While You Were Out" paper notes.

I do not load this extension in Pegasus, will do so and check your other issue.

 Do you use the preview mode (3 panel) view? Try Window > Tile then resize each window.