I am using a standard letter from newlfm. I already adjusted it a bit to my needs (not in the below example code), but I cannot figure out how to reduce the space to the top (between the address and the top of the document). I tried \newlfmP{headermarginsize=0in} but it still seems to be too far down. Is it possible to shift the whole text a bit more up? I also tried something with geometry package, but it didn't seem to have an effect either.
%\title{...}
%
%
\documentclass[11pt,stdletter,orderfromtodate,sigleft]{newlfm}
\usepackage{blindtext, xfrac}
\newlfmP{sigsize=10pt}
\PhrPhone{Phone}
\PhrEmail{Email}
\newlfmP{Headlinewd=0pt,Footlinewd=0pt}
\namefrom{...}
\addrfrom{
Insert address
}
\phonefrom{insert phone}
\emailfrom{insert email}
\dateset{insert date}% Date
\begin{document}
\begin{newlfm}
\textbf{Subject}: text text text text text text text text text \\
\vspace{3mm}
Dear Sir or Madam,\\
blaaa
\end{newlfm}
\end{document}
