Finding ALL your Facebook messages [on phone]
You’re probably aware that Facebook’s messenger includes a "Message Requests" section that filters out messages from people it thinks you don’t know. But did you know there’s also a "Spam" section beyond that?
It’s really important to check both of these sections occasionally, because Facebook can’t be trusted to always know who is and isn’t a legitimate correspondent.
These instructions are demonstrated on my Android phone. Other phones will be similar. For the computer instructions, go here instead.
Go to Messenger and tap on "Chats":
Then on "Message Requests":
First you’ll arrive at the "YOU MAY KNOW" section:
Reply to the ones you want, and delete the ones you don’t. When you’ve finished, your section might be completely empty like mine is. Then tap "SPAM":
Honestly, this section doesn’t seem much different from the "YOU MAY KNOW" section. It might contain a combination of messages you want and don’t want. Again, go through them and reply or delete as needed, until it is empty.
I hope this helps.