Unfortunately, the hosted version of Math and Multimedia will no longer have the same database for storing emails. Starting now, I will transfer all your emails to Feedburner (this is the only solution I can think of right now). This will enable you to continue receiving notifications after the transfer.
You will receive an email from Feedburner asking you to confirm your subscription. To continue your subscription, just click the confirmation link in the email (see sample email below).
Thank you very and my apologies for the inconvenience.