Re: Adobe Photoshop 2021 (Prerelease)

I would like to know how to stop becoming a member of the Photoshop Prerelease program! About 6x/month I get emails inviting me to participate in live meetings. The emails contain no contact information, no unsubscribe option, and no viable reply-to email. I've tried contacting customer support but they have no idea how to help me. Any guidance would be super appreciated!