Not really a surprise. Your letter is only secure if you're employing pigeons to deliver it or if you write in codes.
nostr:nevent1qvzqqqqqqypzqu2jczz73qp9j36s06xz5u94wywypytke8g47k3ffzcjas8jqnatqyvhwumn8ghj7un9d3shjtnwdaehw6r9wfjjucm0d5hsz9mhwden5te0wfjkccte9ehx7um5wghxyctwvshsqg8238pjzsst2n6tjlg77e8m3mmfnvm5w4h7mvl6ykpvcvfzcza2hu7h9zr4 

 Lucky for me, my mail is 100% junk.