diff --git a/wp-includes/pluggable.php b/wp-includes/pluggable.php
index e30fad1808..17a23e3cd8 100644
--- a/wp-includes/pluggable.php
+++ b/wp-includes/pluggable.php
@@ -537,13 +537,28 @@ if ( ! function_exists( 'wp_mail' ) ) :
 		 */
 		do_action_ref_array( 'phpmailer_init', array( &$phpmailer ) );
 
+		$mail_data = compact( 'to', 'subject', 'message', 'headers', 'attachments' );
+
 		// Send!
 		try {
-			return $phpmailer->send();
-		} catch ( PHPMailer\PHPMailer\Exception $e ) {
+			$send = $phpmailer->send();
 
-			$mail_error_data                             = compact( 'to', 'subject', 'message', 'headers', 'attachments' );
-			$mail_error_data['phpmailer_exception_code'] = $e->getCode();
+			/**
+			 * Fires after PHPMailer has successfully sent a mail.
+			 *
+			 * The firing of this action does not necessarily mean that the recipient received the
+			 * email successfully. It only means that the `send` method above was able to
+			 * process the request without any errors.
+			 *
+			 * @since 5.9.0
+			 *
+			 * @param array $mail_data An array containing the mail recipient, subject, message, headers, and attachments.
+			 */
+			do_action( 'wp_mail_succeeded', $mail_data );
+
+			return $send;
+		} catch ( PHPMailer\PHPMailer\Exception $e ) {
+			$mail_data['phpmailer_exception_code'] = $e->getCode();
 
 			/**
 			 * Fires after a PHPMailer\PHPMailer\Exception is caught.
@@ -553,7 +568,7 @@ if ( ! function_exists( 'wp_mail' ) ) :
 			 * @param WP_Error $error A WP_Error object with the PHPMailer\PHPMailer\Exception message, and an array
 			 *                        containing the mail recipient, subject, message, headers, and attachments.
 			 */
-			do_action( 'wp_mail_failed', new WP_Error( 'wp_mail_failed', $e->getMessage(), $mail_error_data ) );
+			do_action( 'wp_mail_failed', new WP_Error( 'wp_mail_failed', $e->getMessage(), $mail_data ) );
 
 			return false;
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d4961e30f9..9ec5252732 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-52082';
+$wp_version = '5.9-alpha-52083';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.