I read books - lots of them. Often I think I should write to the authors about some of the things they say, or about areas of my own experience that seem to run parallel or counter to theirs. I normally don't do so because I think these authors will be far to busy to bother with my meanderings. Also I have twice written to authors only to be advised that they had recently died.
So, my plan now is to put open letters, if I think I have something worth saying, into one another of my blogs rather than write to authors direct. If I include the name of the writer and the name of the book and its topic there may be some faint hope that they will pick up my comments and respond as might others who know them or have read their work.
I don't like to flatter myself with the thought that my views will be available for anyone with access to the Internet to see, but they will.