From eda0313e076f4c94238a3bcf513423ba8a2ee24b Mon Sep 17 00:00:00 2001
From: Marcus Bointon <marcus@synchromedia.co.uk>
Date: Fri, 28 Mar 2025 09:59:05 +0100
Subject: [PATCH] Explain eai

---
 src/PHPMailer.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/PHPMailer.php b/src/PHPMailer.php
index 13760bf1..b40e153d 100644
--- a/src/PHPMailer.php
+++ b/src/PHPMailer.php
@@ -1460,6 +1460,8 @@ class PHPMailer
                  * form input elements (as above), modified to accept Unicode email addresses.
                  * This is also more lenient than Firefox' html5 spec, in order to make the regex faster.
                  * 'eai' is an acronym for Email Address Internationalization.
+                 * This validator is used automatically if you attempt to use recipient addresses
+                 * that contain Unicode characters in the local part.
                  *
                  * @see https://html.spec.whatwg.org/#e-mail-state-(type=email)
                  * @see https://en.wikipedia.org/wiki/International_email