Thanks! I know, sounds like an obvious question, but far too often, people doing mailings forget a few things.
1. Time is relative. "Tomorrow" isn't clear. I don't trust that "tomorrow" is relative to when I signed up for it (even in this case, where I knew the launch date of the site).
2. If someone signs up for a mailing list/newsletter like this, it's best if you send them the most current newsletter. When I sign up for a newsletter like this, I want to read what you are writing. So please, send me something to read.