diff --git a/includes/class-activitypub.php b/includes/class-activitypub.php
index 65afe74..8b3a54e 100644
--- a/includes/class-activitypub.php
+++ b/includes/class-activitypub.php
@@ -16,8 +16,12 @@ class Activitypub {
 		\add_action( 'init', array( '\Activitypub\Activitypub', 'add_rewrite_endpoint' ) );
 		\add_filter( 'pre_get_avatar_data', array( '\Activitypub\Activitypub', 'pre_get_avatar_data' ), 11, 2 );
 
-		\add_post_type_support( 'post', 'activitypub' );
-		\add_post_type_support( 'page', 'activitypub' );
+		// Add support for ActivityPub to custom post types
+		$post_types = \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) ? \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) : array();
+
+		foreach ( $post_types as $post_type ) {
+			\add_post_type_support( $post_type, 'activitypub' );
+		}
 
 		\add_action( 'transition_post_status', array( '\Activitypub\Activitypub', 'schedule_post_activity' ), 10, 3 );
 	}
@@ -89,7 +93,7 @@ class Activitypub {
 	}
 
 	/**
-	 * Marks the post as "no webmentions sent yet"
+	 * Schedule Activities
 	 *
 	 * @param int $post_id
 	 */
diff --git a/includes/class-admin.php b/includes/class-admin.php
index a4523ae..51513cb 100644
--- a/includes/class-admin.php
+++ b/includes/class-admin.php
@@ -98,6 +98,14 @@ class Admin {
 				'default' => 0,
 			)
 		);
+		\register_setting(
+			'activitypub', 'activitypub_support_post_types', array(
+				'type'         => 'string',
+				'description'  => \esc_html__( 'Enable ActivityPub support for post types', 'activitypub' ),
+				'show_in_rest' => true,
+				'default'      => array( 'post', 'pages' ),
+			)
+		);
 	}
 
 	public static function add_settings_help_tab() {
diff --git a/templates/settings.php b/templates/settings.php
index 93f1d75..cfe3b4a 100644
--- a/templates/settings.php
+++ b/templates/settings.php
@@ -50,6 +50,25 @@
 						</p>
 					</td>
 				</tr>
+				<tr>
+					<th scope="row"><?php \esc_html_e( 'Supported post types', 'activitypub' ); ?></th>
+					<td>
+						<fieldset>
+							<?php \esc_html_e( 'Enable ActivityPub support for the following post types:', 'activitypub' ); ?>
+
+							<?php $post_types = \get_post_types( array( 'public' => true ), 'objects' ); ?>
+							<?php $support_post_types = \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) ? \get_option( 'activitypub_support_post_types', array( 'post', 'page' ) ) : array(); ?>
+							<ul>
+							<?php foreach ( $post_types as $post_type ) { ?>
+								<li>
+									<input type="checkbox" id="activitypub_support_post_types" name="activitypub_support_post_types[]" value="<?php echo \esc_attr( $post_type->name ); ?>" <?php echo \checked( true, in_array( $post_type->name, $support_post_types, true ) ); ?> />
+									<label for="<?php echo \esc_attr( $post_type->name ); ?>"><?php echo \esc_html( $post_type->label ); ?></label>
+								</li>
+							<?php } ?>
+							</ul>
+						</fieldset>
+					</td>
+				</tr>
 				<tr>
 					<th scope="row">
 						<?php \esc_html_e( 'Hashtags', 'activitypub' ); ?>