newsletter authors and readers can now send direct messages to each other. The this was a much-requested feature and adds to the platform’s suite of social networking tools.

You’ll find DM in the Chat tab on the app and website. You can start a private conversation from this section, someone’s profile page, or by selecting the Share option in a note or post. When you receive a DM, Substack will notify you in the app and via email.

By default, DMs from people you’re connected with will arrive in your inbox, and those from others will be dropped into the Requests folder. Writers can limit incoming DM requests to paid or founding subscribers. Free subscribers who try to message you will then see a prompt to become a paid subscriber. Writers can include a “send message” button in their posts if they wish.

If you’ve blocked or banned someone, they won’t be able to DM you. You can also turn off DMs entirely by disabling message requests in your settings. If you receive a message that violates Substack’s rules, you can report it.

Over the past year, Substack has added a number of social networking features, such as short posts. Also last week which allows writers to recommend other writers to readers.

The platform came under fire last month for handling pro-Nazi content. It promotes white nationalist and Nazi views. However, some prominent newsletter authors have left Substack in protest of its approach to content moderation.