diff --git a/src/wp-includes/pluggable.php b/src/wp-includes/pluggable.php
index a741ac4e78..2d350d1d5f 100644
--- a/src/wp-includes/pluggable.php
+++ b/src/wp-includes/pluggable.php
@@ -1584,6 +1584,7 @@ if ( ! function_exists( 'wp_notify_postauthor' ) ) :
 				/* translators: Trackback notification email subject. 1: Site title, 2: Post title. */
 				$subject = sprintf( __( '[%1$s] Trackback: "%2$s"' ), $blogname, $post->post_title );
 				break;
+
 			case 'pingback':
 				/* translators: %s: Post title. */
 				$notify_message = sprintf( __( 'New pingback on your post "%s"' ), $post->post_title ) . "\r\n";
@@ -1597,6 +1598,7 @@ if ( ! function_exists( 'wp_notify_postauthor' ) ) :
 				/* translators: Pingback notification email subject. 1: Site title, 2: Post title. */
 				$subject = sprintf( __( '[%1$s] Pingback: "%2$s"' ), $blogname, $post->post_title );
 				break;
+
 			default: // Comments
 				/* translators: %s: Post title. */
 				$notify_message = sprintf( __( 'New comment on your post "%s"' ), $post->post_title ) . "\r\n";
@@ -1606,6 +1608,12 @@ if ( ! function_exists( 'wp_notify_postauthor' ) ) :
 				$notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n";
 				/* translators: %s: Trackback/pingback/comment author URL. */
 				$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
+
+				if ( $comment->comment_parent && user_can( $post->post_author, 'edit_comment', $comment->comment_parent ) ) {
+					/* translators: Comment moderation. %s: Parent comment edit URL. */
+					$notify_message .= sprintf( __( 'In reply to: %s' ), admin_url( "comment.php?action=editcomment&c={$comment->comment_parent}#wpbody-content" ) ) . "\r\n";
+				}
+
 				/* translators: %s: Comment text. */
 				$notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
 				$notify_message .= __( 'You can see all comments on this post here:' ) . "\r\n";
@@ -1613,6 +1621,7 @@ if ( ! function_exists( 'wp_notify_postauthor' ) ) :
 				$subject = sprintf( __( '[%1$s] Comment: "%2$s"' ), $blogname, $post->post_title );
 				break;
 		}
+
 		$notify_message .= get_permalink( $comment->comment_post_ID ) . "#comments\r\n\r\n";
 		/* translators: %s: Comment URL. */
 		$notify_message .= sprintf( __( 'Permalink: %s' ), get_comment_link( $comment ) ) . "\r\n";
@@ -1761,6 +1770,7 @@ if ( ! function_exists( 'wp_notify_moderator' ) ) :
 				$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
 				$notify_message .= __( 'Trackback excerpt: ' ) . "\r\n" . $comment_content . "\r\n\r\n";
 				break;
+
 			case 'pingback':
 				/* translators: %s: Post title. */
 				$notify_message  = sprintf( __( 'A new pingback on the post "%s" is waiting for your approval' ), $post->post_title ) . "\r\n";
@@ -1771,6 +1781,7 @@ if ( ! function_exists( 'wp_notify_moderator' ) ) :
 				$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
 				$notify_message .= __( 'Pingback excerpt: ' ) . "\r\n" . $comment_content . "\r\n\r\n";
 				break;
+
 			default: // Comments
 				/* translators: %s: Post title. */
 				$notify_message  = sprintf( __( 'A new comment on the post "%s" is waiting for your approval' ), $post->post_title ) . "\r\n";
@@ -1781,6 +1792,12 @@ if ( ! function_exists( 'wp_notify_moderator' ) ) :
 				$notify_message .= sprintf( __( 'Email: %s' ), $comment->comment_author_email ) . "\r\n";
 				/* translators: %s: Trackback/pingback/comment author URL. */
 				$notify_message .= sprintf( __( 'URL: %s' ), $comment->comment_author_url ) . "\r\n";
+
+				if ( $comment->comment_parent ) {
+					/* translators: Comment moderation. %s: Parent comment edit URL. */
+					$notify_message .= sprintf( __( 'In reply to: %s' ), admin_url( "comment.php?action=editcomment&c={$comment->comment_parent}#wpbody-content" ) ) . "\r\n";
+				}
+
 				/* translators: %s: Comment text. */
 				$notify_message .= sprintf( __( 'Comment: %s' ), "\r\n" . $comment_content ) . "\r\n\r\n";
 				break;
diff --git a/tests/phpunit/tests/comment.php b/tests/phpunit/tests/comment.php
index 720a805062..ccdc2dd1ef 100644
--- a/tests/phpunit/tests/comment.php
+++ b/tests/phpunit/tests/comment.php
@@ -6,6 +6,7 @@
 class Tests_Comment extends WP_UnitTestCase {
 	protected static $user_id;
 	protected static $post_id;
+	protected static $notify_message = '';
 
 	public function setUp() {
 		parent::setUp();
@@ -434,6 +435,66 @@ class Tests_Comment extends WP_UnitTestCase {
 		$this->assertFalse( $sent );
 	}
 
+	/**
+	 * @ticket 43805
+	 */
+	public function test_wp_new_comment_notify_postauthor_content_should_include_link_to_parent() {
+		$c1 = self::factory()->comment->create(
+			array(
+				'comment_post_ID' => self::$post_id,
+			)
+		);
+
+		$c2 = self::factory()->comment->create(
+			array(
+				'comment_post_ID' => self::$post_id,
+				'comment_parent'  => $c1,
+			)
+		);
+
+		add_filter( 'comment_notification_text', array( $this, 'save_comment_notification_text' ) );
+		wp_new_comment_notify_postauthor( $c2 );
+		remove_filter( 'comment_notification_text', array( $this, 'save_comment_notification_text' ) );
+
+		$this->assertContains( admin_url( "comment.php?action=editcomment&c={$c1}" ), self::$notify_message );
+	}
+
+	/**
+	 * @ticket 43805
+	 */
+	public function test_wp_new_comment_notify_moderator_content_should_include_link_to_parent() {
+		$c1 = self::factory()->comment->create(
+			array(
+				'comment_post_ID' => self::$post_id,
+			)
+		);
+
+		$c2 = self::factory()->comment->create(
+			array(
+				'comment_post_ID'  => self::$post_id,
+				'comment_parent'   => $c1,
+				'comment_approved' => '0',
+			)
+		);
+
+		add_filter( 'comment_moderation_text', array( $this, 'save_comment_notification_text' ) );
+		wp_new_comment_notify_moderator( $c2 );
+		remove_filter( 'comment_moderation_text', array( $this, 'save_comment_notification_text' ) );
+
+		$this->assertContains( admin_url( "comment.php?action=editcomment&c={$c1}" ), self::$notify_message );
+	}
+
+	/**
+	 * Callback for the `comment_notification_text` & `comment_moderation_text` filters.
+	 *
+	 * @param string $notify_message The comment notification or moderation email text.
+	 * @return string
+	 */
+	public function save_comment_notification_text( $notify_message = '' ) {
+		self::$notify_message = $notify_message;
+		return $notify_message;
+	}
+
 	/**
 	 * @ticket 12431
 	 */