bug-related emails - add unsubscribe to bottom of emails

i have once commented on a bug, and for over a year now, i'm receiving email messages that i don't want. the account preferences has nothing on stopping email.
i find it irresponsible not to have an unsubscribe link at the bottom of these messages. none of the bug related links under my account has anything that i'm
subscribed to, but the emails keep coming.

At this point, ..I don't want to post anything else, because I'll only get more spam. I'm contemplating changing the email account to something I'll create just for
you on gmail - and never look at again, ...and flagging you as spammers on gmail. None of that is what I REALLY want to do. Make it stop, or let me stop this
nonsense. If it's there and easy to do, it's not obvious enough to me.

Thanks,
-a

Here is what's at the bottom of the emails:
--
USB mass storage stops working after a while
https://bugs.launchpad.net/bugs/61235
You received this bug notification because you are a direct subscriber
of a duplicate bug.