AT Whatsapp a function will appear that will help the messenger to effectively counter spam. Now it is present in the test version, but will be added soon with the update.
Now users will be able to receive invitations to groups exclusively from people who are in the contact list. As for the rest of the invitations to add to group chats, they will be blocked. Moreover, the messenger is not going to notify the users themselves about this. AT Whatsapp This feature will be added with the arrival of a fresh update. In the meantime, it is available only to those who take part in testing new versions of the application.
