An example from a marketing email a colleague of mine received:

We have removed your email address from our list.

We're sorry to see you go.

Was this a mistake? Did you forward one of our emails to a friend, and they clicked the unsubscribe link not realizing they were in fact unsubscribing you from this list? If this was a mistake, you can re-subscribe at:
Subscribe

For questions or comments, please contact us at:
xxxx