You are not able to see some messages due to Facebook’s automated spam filter which blocks certain messages and it keeps them in separate from inbox and other messages. Earlier, it was revealed that secret message folder labelled as “other” could contain important messages as well which you probably won’t have seen. Steps to access hidden messages in Messenger :

Open the Facebook Messenger App Click on Settings Option Click on “People” Click on “Message Requests” Scroll until you find “See filtered requests”

Facebook says that this feature is meant to protect users from spam, that is why users don’t get notified when he/she receives messages from persons who are not in their friend list. When I tried to check hidden messages, I was surprised to see lot of messages which I missed and I found that most of the messages were not spam. As of now, you won’t get any notifications for filtered messages but it is worth to check it regularly so that you won’t miss any important message in future.

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