Here's how I'm going to do this. My email-to-sister post is going under an old date so as to keep it off the front page. This is how I'm dealing with its length. Since Blogger doesn't have the "below the fold" feature that would allow me to truncate the post, this is how I'm doing it. The five most recent posts are what show up on the front page of my blog. Because new people are coming here all the time I don't want to overwhelm them with a huge post that they have no context for and therefore would likely just move on.
After I eventually get at least five new posts up on the blog I will move my email to sister post into its proper order in the archives. I hope this doesn't seem complicated. It really isn't.
My email can be read here.