Managing E-mail registry notifications

Question

I receive an e-mail whenever something changes in one of the many projects that I’m associated with. I would rather not get these e-mails. When I go to the settings page, there is only the option to change the e-mail address, but not to opt out of the e-mails or to even to change the frequency from daily to weekly or monthly or never. Is there another place to change this or would it be possible to offer these options?

Thank you