Substack’s New ‘Reply Rules’ Feature Lets Creators Control How People Respond

Substack’s new Reply Rules feature allows creators to take greater control over how their audience engages with their content. This update represents a major shift in how the platform manages community interactions, especially as the use of AI-generated content continues to grow. The feature empowers writers to set specific guidelines for replies, helping them maintain a more focused and respectful conversation around their work.

A New Layer of Control for Substack Creators

With Reply Rules, creators can implement automated moderation that aligns with their personal or editorial preferences. This includes filtering out AI-generated text, profanity, or enforcing stylistic constraints such as requiring replies in haiku form. The system is designed to learn from user interactions—such as when a creator hides a comment—and apply those preferences to future discussions. This adaptive approach helps maintain consistency in how replies are handled, reducing the need for constant manual oversight.

The timing of this update is significant, as content moderation has come under increased scrutiny in recent months. With AI-generated text becoming more common, platforms like Substack must find ways to distinguish between human and automated contributions. Reply Rules provides a solution by giving creators the tools to shape their discourse without needing to review every comment individually.

Balancing Freedom and Moderation

Substack has traditionally allowed creators to manage their own communities with minimal interference. This decentralized approach has given writers the freedom to enforce their own standards, whether through locking posts, deleting comments, or banning users. However, this model has also led to criticism, particularly regarding the presence of far-right newsletters and the lack of strict oversight in some areas of the platform.

In response to these concerns, Substack has emphasized its commitment to supporting a wide range of voices while also addressing the challenges that come with such diversity. The Reply Rules feature is part of that effort, offering creators a more efficient way to manage their interactions without compromising the platform’s ethos of open expression.

Currently, Reply Rules is available only for English-language publications. Creators can also choose to unhide comments that have been filtered out, allowing for greater flexibility in how they manage their community. Over time, the system is expected to become more refined, adapting to the unique needs of each publication.

A Broader Push for Creator Empowerment

This update is part of a broader initiative by Substack to enhance the tools available to its writers. Earlier this year, the company introduced a built-in recording studio, enabling creators to produce and publish video content directly from their accounts. Additionally, a TV app for subscribers was launched, allowing them to watch video posts and livestreams on larger screens.

These developments highlight Substack’s growing ambition to position itself as a full-fledged content creation hub rather than just a newsletter platform. As the boundaries between publishing and social media continue to blur, features like Reply Rules are essential in helping creators manage their communities effectively.

While Reply Rules may not eliminate all moderation challenges, it is a significant step toward giving creators more control over their digital spaces. As Substack continues to evolve, its ability to balance freedom of expression with community standards will be crucial to its long-term success.