Twitter has started testing a new “CoTweets” feature that lets users co-author tweets in the U.S., Canada, and Korea.

Having launched the tweet composer, Twitter will invite users through a pop-up to “tweet together with CoTweets”, sending the second user an invitation that they can accept or decline. If they accept, a CoTweet will be created showing both users as co-authors.

As it stands, users can only invite one co-author per tweet, and the co-author account needs to be one that the original author follows or a public account. Users can choose to revoke their co-authorship after publishing, reverting the header to the original user.

“We’re continuing to explore new ways for people to collaborate on Twitter,” a spokesperson for Twitter said. “We’re testing CoTweets for a limited time to learn how people and brands may use this feature to grow and reach new audiences, and strengthen their collaborations with other accounts.”

The brand application of the new feature extends past Twitter team-ups, as it can be leveraged to showcase brand deals with companies, publish joint statements by organizations, as well as promote collaborations between multiple content creators in the form of a podcast, newsletter, or news article.

The feature has been a while in the making. Twitter first sourced it from mobile developer Alessandro Paluzzi’s app code back in December 2021, indicating that it’s open to new use cases for the platform beyond the virtual town square.