We use a Google product called Feedburner to manage daily email and RSS subscriptions.

To unsubscribe from daily email notifications, look for the “unsubscribe now” link located at the very bottom of the message within your inbox. The unsubscribe link is sent with every daily email subscription message as required by law.

For example, to unsubscribe from 1C Homeroom (as an example), click on the “unsubscribe now” link:

To unsubscribe from RSS updates, please check your specific reader’s settings.

To change your email address for daily email notifications just subscribe again with you new email address.

If you have multiple email addresses and wish to have the daily emails switched from one address to another, you will first need to unsubscribe from each website’s mailing list by clicking the “unsubscribe” link at the bottom of the email.