diff --git a/mailpoet/lib/Automation/Engine/Workflows/Step.php b/mailpoet/lib/Automation/Engine/Workflows/Step.php
index 0a375001a4..483570a3f7 100644
--- a/mailpoet/lib/Automation/Engine/Workflows/Step.php
+++ b/mailpoet/lib/Automation/Engine/Workflows/Step.php
@@ -2,8 +2,12 @@
 
 namespace MailPoet\Automation\Engine\Workflows;
 
+use MailPoet\Validator\Schema\ObjectSchema;
+
 interface Step {
   public function getKey(): string;
 
   public function getName(): string;
+
+  public function getArgsSchema(): ObjectSchema;
 }
diff --git a/mailpoet/lib/Automation/Integrations/Core/Actions/DelayAction.php b/mailpoet/lib/Automation/Integrations/Core/Actions/DelayAction.php
index 6fee9c8af9..625951dae2 100644
--- a/mailpoet/lib/Automation/Integrations/Core/Actions/DelayAction.php
+++ b/mailpoet/lib/Automation/Integrations/Core/Actions/DelayAction.php
@@ -8,6 +8,8 @@ use MailPoet\Automation\Engine\Data\Workflow;
 use MailPoet\Automation\Engine\Data\WorkflowRun;
 use MailPoet\Automation\Engine\Hooks;
 use MailPoet\Automation\Engine\Workflows\Action;
+use MailPoet\Validator\Builder;
+use MailPoet\Validator\Schema\ObjectSchema;
 
 class DelayAction implements Action {
   /** @var ActionScheduler */
@@ -27,6 +29,13 @@ class DelayAction implements Action {
     return __('Delay', 'mailpoet');
   }
 
+  public function getArgsSchema(): ObjectSchema {
+    return Builder::object([
+      'delay' => Builder::integer()->minimum(1),
+      'delay_type' => Builder::string()->default('HOURS'),
+    ]);
+  }
+
   public function run(Workflow $workflow, WorkflowRun $workflowRun, Step $step): void {
     $this->actionScheduler->schedule(time() + $this->calculateSeconds($step), Hooks::WORKFLOW_STEP, [
       [
diff --git a/mailpoet/lib/Automation/Integrations/MailPoet/Actions/SendEmailAction.php b/mailpoet/lib/Automation/Integrations/MailPoet/Actions/SendEmailAction.php
index 98ab31cee4..b9393aa943 100644
--- a/mailpoet/lib/Automation/Integrations/MailPoet/Actions/SendEmailAction.php
+++ b/mailpoet/lib/Automation/Integrations/MailPoet/Actions/SendEmailAction.php
@@ -15,10 +15,16 @@ use MailPoet\InvalidStateException;
 use MailPoet\Newsletter\NewslettersRepository;
 use MailPoet\Newsletter\Scheduler\AutomationEmailScheduler;
 use MailPoet\Newsletter\Sending\ScheduledTasksRepository;
+use MailPoet\Settings\SettingsController;
 use MailPoet\Subscribers\SubscriberSegmentRepository;
+use MailPoet\Validator\Builder;
+use MailPoet\Validator\Schema\ObjectSchema;
 use Throwable;
 
 class SendEmailAction implements Action {
+  /** @var SettingsController */
+  private $settings;
+
   /** @var NewslettersRepository */
   private $newslettersRepository;
 
@@ -32,11 +38,13 @@ class SendEmailAction implements Action {
   private $automationEmailScheduler;
 
   public function __construct(
+    SettingsController $settings,
     NewslettersRepository $newslettersRepository,
     ScheduledTasksRepository $scheduledTasksRepository,
     SubscriberSegmentRepository $subscriberSegmentRepository,
     AutomationEmailScheduler $automationEmailScheduler
   ) {
+    $this->settings = $settings;
     $this->newslettersRepository = $newslettersRepository;
     $this->scheduledTasksRepository = $scheduledTasksRepository;
     $this->subscriberSegmentRepository = $subscriberSegmentRepository;
@@ -51,6 +59,15 @@ class SendEmailAction implements Action {
     return __('Send email', 'mailpoet');
   }
 
+  public function getArgsSchema(): ObjectSchema {
+    return Builder::object([
+      'subject' => Builder::string()->default(__('Subject', 'mailpoet')),
+      'preheader' => Builder::string(),
+      'from_name' => Builder::string()->default($this->settings->get('sender.name')),
+      'email' => Builder::string()->default($this->settings->get('sender.address')),
+    ]);
+  }
+
   public function isValid(array $subjects, Step $step, Workflow $workflow): bool {
     try {
       $this->getEmailForStep($step);
diff --git a/mailpoet/lib/Automation/Integrations/MailPoet/Triggers/SegmentSubscribedTrigger.php b/mailpoet/lib/Automation/Integrations/MailPoet/Triggers/SegmentSubscribedTrigger.php
index efce304620..8d2564f9c6 100644
--- a/mailpoet/lib/Automation/Integrations/MailPoet/Triggers/SegmentSubscribedTrigger.php
+++ b/mailpoet/lib/Automation/Integrations/MailPoet/Triggers/SegmentSubscribedTrigger.php
@@ -8,6 +8,8 @@ use MailPoet\Automation\Integrations\MailPoet\Subjects\SegmentSubject;
 use MailPoet\Automation\Integrations\MailPoet\Subjects\SubscriberSubject;
 use MailPoet\Entities\SubscriberSegmentEntity;
 use MailPoet\InvalidStateException;
+use MailPoet\Validator\Builder;
+use MailPoet\Validator\Schema\ObjectSchema;
 use MailPoet\WP\Functions as WPFunctions;
 
 class SegmentSubscribedTrigger implements Trigger {
@@ -28,6 +30,10 @@ class SegmentSubscribedTrigger implements Trigger {
     return __('Subscribed to segment');
   }
 
+  public function getArgsSchema(): ObjectSchema {
+    return Builder::object();
+  }
+
   public function registerHooks(): void {
     $this->wp->addAction('mailpoet_segment_subscribed', [$this, 'handleSubscription'], 10, 2);
   }