Twitter now enable you to receive direct message from any follower , if you enable this option in the setting.
fact, this is a minor feature in twitter which allows the brands and
companies to receive a private messages from the follower.
feature can be useful for people who have followers , wants to follow
back in order to DM something private, but it could also lead to a ton
of spam. This is the only reason it is off by default.
To start this feature all the thing you’ve to do is, just navigate to the account setting page and scroll down .
see the feature as listed above “Receive direct messages from any
follower” , just check that one option. If you feel that user trying to
send DM unnecessarily, then you come back to the same option and uncheck