I have a celebrity fan page which has more than 1 million likes and everyday when I sign into my account, I see too many private messages and notifications for this fan page. Even though, I read and "mark them as read" everyday, still more than 200+ are still remaining on the fan page. Does anyone know how to "mark them as read" at one time ? Because for the old messages and notifications, I have to scroll down and then select them, which takes lot of time, since I have to use a proxy server. Hope I get my answer here.
There's this symbol for mark as read one at a time, you just have to self explore about the messages in Facebook.
No, there is not an option for marketing as unread for once and for all, if the messages are bothering you, you should just disable them at the Fanpage settings.