X will start charging some new users a minimum annual fee to interact with the platform, a move that owner Elon Musk said will combat fake and spam accounts.

The platform formerly known as Twitter started testing the new subscription model, called Not A Bot, on Tuesday for users creating new accounts on the web in New Zealand and the Philippines, according to a blog post from the company. New accounts will have to verify their phone number and pay $1 annually to post content, like posts, reply or do other key functions.