If you have opened your Twitter direct messages to receive messages from anyone, Twitter now separates them into two buckets: an Inbox and Requests. Your Inbox collects DMs from people you follow, while Requests are DMs from people you don’t follow. You can review Requests without the sender knowing you’ve reviewed their message until you accept it. If you accept a request, that person’s direct messages will be delivered to your Inbox in the future.
If you’ve opted-in to get Direct Messages from anyone, messages from people you don’t follow will go into requests. https://t.co/n1qasb7JZC pic.twitter.com/HQY20T5f6t
— Twitter (@Twitter) May 30, 2017
Based on some preliminary testing by The Verge, it appears that the new direct message handling functionality is slowly rolling out to users across Twitter’s apps and website.