diff --git a/app/controllers/api/messaging.php b/app/controllers/api/messaging.php
index ef17149aa4..101ceb66dd 100644
--- a/app/controllers/api/messaging.php
+++ b/app/controllers/api/messaging.php
@@ -1307,16 +1307,16 @@ App::post('/v1/messaging/messages/email')
     ->label('sdk.response.type', Response::CONTENT_TYPE_JSON)
     ->label('sdk.response.model', Response::MODEL_MESSAGE)
     ->param('providerId', '', new Text(128), 'Email Provider ID.')
-    ->param('to', [], new ArrayList(new Text(0)), 'List of Topic IDs or List of User IDs or List of Target IDs.')
-    ->param('subject', '', new Text(0), 'Email Subject.')
-    ->param('content', '', new Text(0), 'Email Content.')
-    ->param('from', '', new Text(0), 'Email from.', true)
+    ->param('to', [], new ArrayList(new Text(65535)), 'List of Topic IDs or List of User IDs or List of Target IDs.')
+    ->param('subject', '', new Text(128), 'Email Subject.')
+    ->param('content', '', new Text(65407), 'Email Content.')
+    ->param('from', '', new Text(128), 'Email from.', true)
     ->param('html', false, new Boolean(false), 'Is content of type HTML', true)
     ->inject('dbForProject')
     ->inject('project')
     ->inject('messaging')
     ->inject('response')
-    ->action(function (string $providerId, array $to, string $subject, string $content, string $from, string $html, string $deliveryTime, Database $dbForProject, Document $project, Messaging $messaging, Response $response) {
+    ->action(function (string $providerId, array $to, string $subject, string $content, string $from, string $html, Database $dbForProject, Document $project, Messaging $messaging, Response $response) {
         $provider = $dbForProject->getDocument('providers', $providerId);
 
         if ($provider->isEmpty()) {
diff --git a/app/workers/messaging.php b/app/workers/messaging.php
index 6fb1f42dc6..5b92bf59a0 100644
--- a/app/workers/messaging.php
+++ b/app/workers/messaging.php
@@ -76,7 +76,7 @@ class MessagingV1 extends Worker
     {
         $credentials = $record->getAttribute('credentials');
         return match ($record->getAttribute('provider')) {
-            'mailgun' => new Mailgun($credentials['apiKey'], $credentials['domain']),
+            'mailgun' => new Mailgun($credentials['apiKey'], $credentials['domain'], $credentials['isEuRegion']),
             'sendgrid' => new SendGrid($credentials['apiKey']),
             default => null
         };