diff --git a/mailpoet/lib/DI/ContainerConfigurator.php b/mailpoet/lib/DI/ContainerConfigurator.php
index e716ff6b0f..fd9b0975c2 100644
--- a/mailpoet/lib/DI/ContainerConfigurator.php
+++ b/mailpoet/lib/DI/ContainerConfigurator.php
@@ -278,6 +278,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     $container->autowire(\MailPoet\Mailer\WordPress\WordpressMailerReplacer::class);
     $container->autowire(\MailPoet\Mailer\Methods\Common\BlacklistCheck::class);
     $container->autowire(\MailPoet\Mailer\MetaInfo::class);
+    $container->autowire(\MailPoet\Mailer\Methods\ErrorMappers\MailPoetMapper::class)->setPublic(true);
     // Subscribers
     $container->autowire(\MailPoet\Subscribers\NewSubscriberNotificationMailer::class)->setPublic(true);
     $container->autowire(\MailPoet\Subscribers\ConfirmationEmailMailer::class)->setPublic(true);
diff --git a/mailpoet/lib/Mailer/Mailer.php b/mailpoet/lib/Mailer/Mailer.php
index 24ff8f2e81..c4191bc07a 100644
--- a/mailpoet/lib/Mailer/Mailer.php
+++ b/mailpoet/lib/Mailer/Mailer.php
@@ -92,7 +92,7 @@ class Mailer {
           $this->mailerConfig['mailpoet_api_key'],
           $this->sender,
           $this->replyTo,
-          new MailPoetMapper(),
+          ContainerWrapper::getInstance()->get(MailPoetMapper::class),
           ContainerWrapper::getInstance()->get(AuthorizedEmailsController::class)
         );
         break;
diff --git a/mailpoet/lib/Mailer/MailerError.php b/mailpoet/lib/Mailer/MailerError.php
index 9345a6f5bb..6a64109763 100644
--- a/mailpoet/lib/Mailer/MailerError.php
+++ b/mailpoet/lib/Mailer/MailerError.php
@@ -9,6 +9,7 @@ class MailerError {
   const OPERATION_SEND = 'send';
   const OPERATION_AUTHORIZATION = 'authorization';
   const OPERATION_INSUFFICIENT_PRIVILEGES = 'insufficient_privileges';
+  const OPERATION_EMAIL_LIMIT_REACHED = 'email_limit_reached';
 
   const LEVEL_HARD = 'hard';
   const LEVEL_SOFT = 'soft';
@@ -16,6 +17,7 @@ class MailerError {
   const MESSAGE_EMAIL_FORBIDDEN_ACTION = 'Key is valid, but the action is forbidden';
   const MESSAGE_EMAIL_INSUFFICIENT_PRIVILEGES = 'Insufficient privileges';
   const MESSAGE_EMAIL_NOT_AUTHORIZED = 'The email address is not authorized';
+  const MESSAGE_EMAIL_VOLUME_LIMIT_REACHED = 'Email volume limit reached';
 
   /** @var string */
   private $operation;
diff --git a/mailpoet/lib/Mailer/Methods/ErrorMappers/MailPoetMapper.php b/mailpoet/lib/Mailer/Methods/ErrorMappers/MailPoetMapper.php
index 5e10b4073c..615ba66c81 100644
--- a/mailpoet/lib/Mailer/Methods/ErrorMappers/MailPoetMapper.php
+++ b/mailpoet/lib/Mailer/Methods/ErrorMappers/MailPoetMapper.php
@@ -3,13 +3,16 @@
 namespace MailPoet\Mailer\Methods\ErrorMappers;
 
 use InvalidArgumentException;
+use MailPoet\Config\ServicesChecker;
 use MailPoet\Mailer\Mailer;
 use MailPoet\Mailer\MailerError;
 use MailPoet\Mailer\SubscriberError;
 use MailPoet\Services\Bridge\API;
 use MailPoet\Util\Helpers;
+use MailPoet\Util\License\Features\Subscribers as SubscribersFeature;
 use MailPoet\Util\Notices\UnauthorizedEmailNotice;
 use MailPoet\WP\Functions as WPFunctions;
+use MailPoetVendor\Carbon\Carbon;
 
 class MailPoetMapper {
   use BlacklistErrorMapperTrait;
@@ -19,6 +22,25 @@ class MailPoetMapper {
 
   const TEMPORARY_UNAVAILABLE_RETRY_INTERVAL = 300; // seconds
 
+  /** @var ServicesChecker */
+  private $servicesChecker;
+
+  /** @var SubscribersFeature */
+  private $subscribersFeature;
+
+  /** @var WPFunctions */
+  private $wp;
+
+  public function __construct(
+    ServicesChecker $servicesChecker,
+    SubscribersFeature $subscribers,
+    WPFunctions $wp
+  ) {
+    $this->servicesChecker = $servicesChecker;
+    $this->subscribersFeature = $subscribers;
+    $this->wp = $wp;
+  }
+
   public function getInvalidApiKeyError() {
     return new MailerError(
       MailerError::OPERATION_SEND,
@@ -60,6 +82,9 @@ class MailPoetMapper {
         if ($result['message'] === MailerError::MESSAGE_EMAIL_INSUFFICIENT_PRIVILEGES) {
           $operation = MailerError::OPERATION_INSUFFICIENT_PRIVILEGES;
           $message = $this->getInsufficientPrivilegesMessage();
+        } elseif ($result['message'] === MailerError::MESSAGE_EMAIL_VOLUME_LIMIT_REACHED) {
+          $operation = MailerError::OPERATION_EMAIL_LIMIT_REACHED;
+          $message = $this->getEmailVolumeLimitReachedMessage();
         } elseif ($result['message'] === MailerError::MESSAGE_EMAIL_NOT_AUTHORIZED) {
           $operation = MailerError::OPERATION_AUTHORIZATION;
           $message = $this->getUnauthorizedEmailMessage($sender);
@@ -96,7 +121,7 @@ class MailPoetMapper {
   private function getUnauthorizedEmailMessage($sender) {
     $email = $sender ? $sender['from_email'] : __('Unknown address', 'mailpoet');
     $validationError = ['invalid_sender_address' => $email];
-    $notice = new UnauthorizedEmailNotice(WPFunctions::get(), null);
+    $notice = new UnauthorizedEmailNotice($this->wp, null);
     $message = $notice->getMessage($validationError);
     return $message;
   }
@@ -148,4 +173,25 @@ class MailPoetMapper {
 
     return "{$message}<br/>";
   }
+
+  private function getEmailVolumeLimitReachedMessage(): string {
+    $partialApiKey = $this->servicesChecker->generatePartialApiKey();
+    $emailVolumeLimit = $this->subscribersFeature->getEmailVolumeLimit();
+    $date = Carbon::now()->startOfMonth()->addMonth();
+    $message = sprintf(
+      __('You have sent more emails this month than your MailPoet plan includes (%s), and sending has been temporarily paused. To continue sending with MailPoet Sending Service please [link]upgrade your plan[/link], or wait until sending is automatically resumed on <b>%s</b>.', 'mailpoet'),
+      $emailVolumeLimit,
+      $this->wp->dateI18n(get_option('date_format'), $date->getTimestamp())
+    );
+    $message = Helpers::replaceLinkTags(
+      $message,
+      "https://account.mailpoet.com/orders/upgrade/{$partialApiKey}",
+      [
+        'target' => '_blank',
+        'rel' => 'noopener noreferrer',
+      ]
+    );
+
+    return "{$message}<br/>";
+  }
 }
diff --git a/mailpoet/lib/Util/License/Features/Subscribers.php b/mailpoet/lib/Util/License/Features/Subscribers.php
index 5c8137c497..2213bdee0d 100644
--- a/mailpoet/lib/Util/License/Features/Subscribers.php
+++ b/mailpoet/lib/Util/License/Features/Subscribers.php
@@ -15,6 +15,7 @@ class Subscribers {
   const MSS_SUPPORT_SETTING_KEY = 'mta.mailpoet_api_key_state.data.support_tier';
   const PREMIUM_KEY_STATE = 'premium.premium_key_state.state';
   const PREMIUM_SUBSCRIBERS_LIMIT_SETTING_KEY = 'premium.premium_key_state.data.site_active_subscriber_limit';
+  const PREMIUM_EMAIL_VOLUME_LIMIT_SETTING_KEY = 'premium.premium_key_state.data.email_volume_limit';
   const PREMIUM_SUPPORT_SETTING_KEY = 'premium.premium_key_state.data.support_tier';
 
   /** @var SettingsController */
@@ -62,6 +63,10 @@ class Subscribers {
     return false;
   }
 
+  public function getEmailVolumeLimit(): int {
+    return (int)$this->settings->get(self::PREMIUM_EMAIL_VOLUME_LIMIT_SETTING_KEY);
+  }
+
   private function hasValidMssKey() {
     $state = $this->settings->get(self::MSS_KEY_STATE);
     return $state === Bridge::KEY_VALID || $state === Bridge::KEY_EXPIRING;