It's true, but currently only for Comcast customers (which was a large part of the problem).
We are continuing to work actively with Microsoft to ensure our emails are delivered properly to Hotmail / MSN / Live users. It's mostly a game of waiting for Microsoft to respond to us. Our apologies, we're definitely working on this one.
Yahoo mail, I think should be working. I just created a test account and was able to receive my registration confirmation account.
Gmail should also be working. I *THINK* all junk mail to gmail useres goes into the Spam folder. To the best of my knowledge, gmail doesn't filter spam that the user cannot then go find in the spam folder. Other email providers will not even deliver the message to the spam folder, but rather quietly delete or ignore the message.
If you can provide me any additional information, please do so here. If you would rather, for privacy concerns, you can PM me to get help on this issue. I'll see what I can do regarding your email provider.
We are continuing to make this a priority for the team. We're working on writing some new code to help with email delivery. Thanks for your patience!