diff --git a/e107_handlers/mail.php b/e107_handlers/mail.php
index ee63b9f8ce..74230b5ba1 100644
--- a/e107_handlers/mail.php
+++ b/e107_handlers/mail.php
@@ -130,14 +130,10 @@
 //define('MAIL_DEBUG',true);
 //define('LOG_CALLER', true);
 
-//require_once(e_HANDLER.'phpmailer/class.phpmailer.php');
-//require_once(e_HANDLER.'phpmailer/class.smtp.php');
-//require_once(e_HANDLER.'phpmailer/PHPMailerAutoload.php');
-
+use PHPMailer\PHPMailer\Exception;
 use PHPMailer\PHPMailer\PHPMailer;
-// use PHPMailer\PHPMailer\SMTP;
 use PHPMailer\PHPMailer\POP3;
-use PHPMailer\PHPMailer\Exception;
+
 require_once(e_HANDLER.'vendor/autoload.php');
 
 
@@ -438,7 +434,7 @@ public function makePrintableAddress($email,$to)
 	 */
 	protected function openLog($logInfo = true)
 	{
-		if ($this->logEnable && ($this->logHandle === false))
+		if ($this->logEnable && !is_resource($this->logHandle))
 		{
 			$logFileName = MAIL_LOG_PATH.'mailoutlog.log';
 			$this->logHandle = fopen($logFileName, 'a');      // Always append to file
@@ -487,7 +483,7 @@ protected function openLog($logInfo = true)
 	 */
 	protected function logLine($text)
 	{
-		if ($this->logEnable && ($this->logHandle > 0))
+		if ($this->logEnable && is_resource($this->logHandle))
 		{
 			fwrite($this->logHandle,date('H:i:s y.m.d').' - '.$text."\r\n");
 		}
@@ -496,11 +492,12 @@ protected function logLine($text)
 	}
 
 	/**
-	 *	Close log
+	 * Close log
+	 * @return void
 	 */
 	protected function closeLog()
 	{
-		if ($this->logEnable && ($this->logHandle > 0))
+		if ($this->logEnable && is_resource($this->logHandle))
 		{
 			fclose($this->logHandle);
 		}
diff --git a/e107_tests/tests/unit/e107EmailTest.php b/e107_tests/tests/unit/e107EmailTest.php
index c493e6d4fc..4ba19680ef 100644
--- a/e107_tests/tests/unit/e107EmailTest.php
+++ b/e107_tests/tests/unit/e107EmailTest.php
@@ -276,4 +276,50 @@ function testSentMimeMessage()
 
 		}
 
+		/**
+		 * @see https://github.com/e107inc/e107/issues/5131
+		 * @throws Exception if the {@link e107Email} object cannot be created.
+		 */
+		function testLogFileHandle()
+		{
+			$logFilePath = e_ROOT . MAIL_LOG_PATH . 'mailoutlog.log';
+
+			$randomString1 = uniqid();
+			$randomString2 = uniqid();
+
+			$this->assertFalse($this->fileContainsString($logFilePath, $randomString1));
+			$this->assertFalse($this->fileContainsString($logFilePath, $randomString2));
+
+			$eml = $this->make('e107Email', ['send' => function() { return true; }]);
+			$eml->logEnable(2);
+			$eml->sendEmail(
+				'nobody@example.com',
+				"$randomString1 Example",
+				['body' => 'Message body'],
+			);
+			$this->assertTrue($this->fileContainsString($logFilePath, $randomString1));
+			$eml->sendEmail(
+				'nobody2@example.com',
+				"$randomString2 Example",
+				['body' => 'Message body'],
+			);
+			$this->assertTrue($this->fileContainsString($logFilePath, $randomString2));
+		}
+
+		/**
+		 * @param $filePath
+		 * @param $string
+		 * @return bool
+		 */
+		private function fileContainsString($filePath, $string)
+		{
+			if (!file_exists($filePath)) return false;
+			$handle = fopen($filePath, 'r');
+			while (($buffer = fgets($handle)) !== false) {
+				if (strpos($buffer, $string) !== false) {
+					return true;
+				}
+			}
+			return false;
+		}
 	}