I've been using Bitbucket for years and received notification emails for all of the repos I'm watching. These notification emails stopped coming in about a week ago. I didn't change any settings with my notifications or my email address. In fact, the only thing that I changed was I opted in to the new pull request experience (which is nice BTW). It could be a coincidence, but it seems like the emails stopped around the same time as opting in.
I've asked other team members if they're still receiving their bitbucket notification emails and they are. I'm the only one with the problem.
As a side note, my Jira email notifications work fine. It's only Bitbucket emails that are not coming through.