Added a retry email service provider

src/ServicesProvider/ServicesProvider.php

@@ -19,6 +19,7 @@ use Psr\Http\Message\ServerRequestInterface as Request;
 use UserFrosting\Sprinkle\Core\Log\MixedFormatter;
 use UserFrosting\Sprinkle\UFTweaks\Twig\HasRoleExtension;
 use UserFrosting\Sprinkle\UFTweaks\Twig\MobileDetectExtension;
+use UserFrosting\Sprinkle\UFTweaks\Mail\RetryMailer;
 
 
 /**
@@ -209,5 +210,26 @@ class ServicesProvider
 
             return $logger;
         };
+
+        /*
+         * Mail service.
+         *
+         * @return \UserFrosting\Sprinkle\Core\Mail\Mailer
+         * @return \UserFrosting\Sprinkle\UFTweaks\Mail\RetryMailer
+         */
+        $container->extend('mailer', function ($mailer, $c) {
+            if (!$c->config['retry_mailer.enabled']) {
+                return $mailer;
+            }
+
+            $retryMailer = new RetryMailer($c->mailLogger, $c->config['mail']);
+
+            // Use UF debug settings to override any service-specific log settings.
+            if (!$c->config['debug.smtp']) {
+                $retryMailer->getPhpMailer()->SMTPDebug = 0;
+            }
+
+            return $retryMailer;
+        });
     }
 }