diff --git a/classes/components/forms/emailTemplate/EmailTemplateForm.php b/classes/components/forms/emailTemplate/EmailTemplateForm.php
index 3c83f56c8f3..49a355e7526 100644
--- a/classes/components/forms/emailTemplate/EmailTemplateForm.php
+++ b/classes/components/forms/emailTemplate/EmailTemplateForm.php
@@ -33,13 +33,12 @@ public function __construct(string $action, array $locales)
         $this->action = $action;
         $this->method = 'POST';
         $this->locales = $locales;
-
         $userGroups = collect();
-        Repo::userGroup()->getCollector()
-            ->filterByContextIds([Application::get()->getRequest()->getContext()->getId()])
-            ->getMany()->each(fn (UserGroup $group) => $userGroups->add([
-                'value' => $group->getId(),
-                'label' => $group->getLocalizedName()
+
+        collect(UserGroup::all())
+            ->each(fn(UserGroup $group) => $userGroups->add([
+                'value' => $group->id,
+                'label' => $group->getLocalizedData('name', null)
             ]));
 
         $this->addField(new FieldText('name', [
diff --git a/classes/emailTemplate/Repository.php b/classes/emailTemplate/Repository.php
index 6bf1aa9215c..3c23592dc3c 100644
--- a/classes/emailTemplate/Repository.php
+++ b/classes/emailTemplate/Repository.php
@@ -24,6 +24,7 @@
 use PKP\security\Role;
 use PKP\services\PKPSchemaService;
 use PKP\user\User;
+use PKP\userGroup\UserGroup;
 use PKP\validation\ValidatorFactory;
 
 class Repository
@@ -134,9 +135,11 @@ public function validate(?EmailTemplate $object, array $props, Context $context)
         //  If assignedUserGroupIds were passed to limit email access, check that the user groups exists within the context
         if (isset($props['assignedUserGroupIds'])) {
             $validator->after(function () use ($validator, $props, $context) {
-                $existingGroupIds = Repo::userGroup()->getCollector()
-                    ->filterByContextIds([$context->getId()])
-                    ->filterByUserGroupIds($props['assignedUserGroupIds'])->getIds()->toArray();
+                $existingGroupIds = UserGroup::withContextIds([$context->getId()])
+                    ->withUserGroupIds($props['assignedUserGroupIds'])
+                    ->get()
+                    ->pluck('userGroupId')
+                    ->toArray();
 
                 if (!empty(array_diff($existingGroupIds, $props['assignedUserGroupIds']))) {
                     $validator->errors()->add('assignedUserGroupIds', __('api.emailTemplates.404.userGroupIds'));
@@ -200,7 +203,7 @@ public function deleteMany(Collector $collector): void
     {
         foreach ($collector->getMany() as $emailTemplate) {
             $this->delete($emailTemplate);
-            $this->deleteTemplateGroupAccess(Application::get()->getRequest()->getContext()->getId(), $emailTemplate);
+            $this->deleteTemplateGroupAccess(Application::get()->getRequest()->getContext()->getId(), [$emailTemplate->getData('key')]);
         }
     }
 
@@ -267,7 +270,7 @@ public function isTemplateAccessibleToUser(User $user, EmailTemplate $template,
         $templateUserGroups = $this->getAssignedGroupsIds($template->getData('key'), $contextId);
 
         foreach ($userUserGroups as $userGroup) {
-            if (in_array($userGroup->getId(), $templateUserGroups)) {
+            if (in_array($userGroup->id, $templateUserGroups)) {
                 return true;
             }
         }