I like email for all the reasons most folks do: speed and ease. But when it comes to solid connections, I am a devoted letter writer. I so enjoy images of postal people and activity of times past. It reminds me that the fourth dimension of TIME goes in both directions - forward and back. I see old letters and old images and I feel a connection with all the people who lived before.
The British Postal Museum and Archives has its own Flickr account. Here are some images I especially like. You can find the home page for the account here.