Thank you for your feedback and sorry for the confusion. Clearly I did a bad job with this post.
With Pony there is no "send" button. As the developer, I've been using Pony myself for a few months and I've already had countless times when I've put something in my Outbox, only to realize the tone was wrong and needed to be re-worded. Having no "send" button and only one pickup every day gives you time to pause and reflect and change your message until it suits its purpose.
Does that clarify? How could I clarify the home/about page to make that clearer?