Email ending up in Spam

Over the last month or two, a couple people in our company stopped receiving our broadcast emails and the emails that are part of a campaign. When I have logged into their account, one of them (myself) had been opted out - which I assure you I didn’t do as I am the Marketing Manager and need to be able to receive emails. One other person email status had changed to orange, and it stated that I needed to indicate that I had premission to email to her. That is one problem - how does it go from “you have permission” to “you don’t” when they are part of staff and have always received emails.
The other problem is that now all of the emails sent to my email address go into my spam folder, even after I’ve marked them as Safe Sender. How to we stop this from happening?