diff --git a/lib/DI/ContainerConfigurator.php b/lib/DI/ContainerConfigurator.php
index 24e0e9825a..4609fbe35f 100644
--- a/lib/DI/ContainerConfigurator.php
+++ b/lib/DI/ContainerConfigurator.php
@@ -172,6 +172,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     $container->autowire(\MailPoet\Form\FormsRepository::class);
     $container->autowire(\MailPoet\Form\Renderer::class);
     $container->autowire(\MailPoet\Form\BlocksRenderer::class);
+    $container->autowire(\MailPoet\Form\Block\Base::class);
     $container->autowire(\MailPoet\Form\Block\Checkbox::class);
     $container->autowire(\MailPoet\Form\Block\Date::class);
     $container->autowire(\MailPoet\Form\Block\Divider::class);
diff --git a/lib/Form/Block/Base.php b/lib/Form/Block/Base.php
index a779fbba1e..0b65d6c691 100644
--- a/lib/Form/Block/Base.php
+++ b/lib/Form/Block/Base.php
@@ -6,7 +6,7 @@ use MailPoet\Form\Util\FieldNameObfuscator;
 use MailPoet\Models\ModelValidator;
 use MailPoet\WP\Functions as WPFunctions;
 
-abstract class Base {
+class Base {
 
   /** @var FieldNameObfuscator */
   private $fieldNameObfuscator;
@@ -19,7 +19,7 @@ abstract class Base {
     $this->wp = $wp;
   }
 
-  protected function getInputValidation($block, $extraRules = []) {
+  public function getInputValidation($block, $extraRules = []) {
     $rules = [];
 
     if ($block['id'] === 'email') {
@@ -78,7 +78,7 @@ abstract class Base {
     return join(' ', $validation);
   }
 
-  protected function renderLabel($block) {
+  public function renderLabel($block) {
     $html = '';
     if (
       isset($block['params']['hide_label'])
@@ -106,7 +106,7 @@ abstract class Base {
     return $html;
   }
 
-  protected function renderInputPlaceholder($block) {
+  public function renderInputPlaceholder($block) {
     $html = '';
     // if the label is displayed as a placeholder,
     if (
@@ -126,7 +126,7 @@ abstract class Base {
   }
 
   // return field name depending on block data
-  protected function getFieldName($block = []) {
+  public function getFieldName($block = []) {
     if ((int)$block['id'] > 0) {
       return 'cf_' . $block['id'];
     } elseif (isset($block['params']['obfuscate']) && !$block['params']['obfuscate']) {
@@ -136,19 +136,19 @@ abstract class Base {
     }
   }
 
-  protected function getFieldLabel($block = []) {
+  public function getFieldLabel($block = []) {
     return (isset($block['params']['label'])
             && strlen(trim($block['params']['label'])) > 0)
             ? trim($block['params']['label']) : '';
   }
 
-  protected function getFieldValue($block = []) {
+  public function getFieldValue($block = []) {
     return (isset($block['params']['value'])
             && strlen(trim($block['params']['value'])) > 0)
             ? $this->wp->escAttr(trim($block['params']['value'])) : '';
   }
 
-  protected function getInputModifiers($block = []) {
+  public function getInputModifiers($block = []) {
     $modifiers = [];
 
     if (isset($block['params']['readonly']) && $block['params']['readonly']) {
diff --git a/lib/Form/Block/Checkbox.php b/lib/Form/Block/Checkbox.php
index 1e53022cf8..3bcf0d7560 100644
--- a/lib/Form/Block/Checkbox.php
+++ b/lib/Form/Block/Checkbox.php
@@ -2,24 +2,37 @@
 
 namespace MailPoet\Form\Block;
 
-class Checkbox extends Base {
+use MailPoet\WP\Functions as WPFunctions;
+
+class Checkbox {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  /** @var WPFunctions */
+  private $wp;
+
+  public function __construct(Base $baseRenderer, WPFunctions $wp) {
+    $this->baseRenderer = $baseRenderer;
+    $this->wp = $wp;
+  }
 
   public function render($block) {
     $html = '';
 
-    $fieldName = 'data[' . $this->getFieldName($block) . ']';
-    $fieldValidation = $this->getInputValidation($block);
+    $fieldName = 'data[' . $this->baseRenderer->getFieldName($block) . ']';
+    $fieldValidation = $this->baseRenderer->getInputValidation($block);
 
     $html .= '<p class="mailpoet_paragraph">';
 
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
 
     $options = (!empty($block['params']['values'])
       ? $block['params']['values']
       : []
     );
 
-    $selectedValue = self::getFieldValue($block);
+    $selectedValue = $this->baseRenderer->getFieldValue($block);
 
     foreach ($options as $option) {
       $html .= '<label class="mailpoet_checkbox_label">';
@@ -39,7 +52,7 @@ class Checkbox extends Base {
 
       $html .= $fieldValidation;
 
-      $html .= ' /> ' . esc_attr($option['value']);
+      $html .= ' /> ' . $this->wp->escAttr($option['value']);
 
       $html .= '</label>';
     }
diff --git a/lib/Form/Block/Date.php b/lib/Form/Block/Date.php
index 14bd94d224..43394f01d6 100644
--- a/lib/Form/Block/Date.php
+++ b/lib/Form/Block/Date.php
@@ -2,14 +2,19 @@
 
 namespace MailPoet\Form\Block;
 
-use MailPoet\WP\Functions as WPFunctions;
+class Date {
 
-class Date extends Base {
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
 
   public function render($block) {
     $html = '';
     $html .= '<p class="mailpoet_paragraph">';
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
     $html .= $this->renderDateSelect($block);
     $html .= '</p>';
 
@@ -19,7 +24,7 @@ class Date extends Base {
   private function renderDateSelect($block = []) {
     $html = '';
 
-    $fieldName = 'data[' . $this->getFieldName($block) . ']';
+    $fieldName = 'data[' . $this->baseRenderer->getFieldName($block) . ']';
 
     $dateFormats = $this->getDateFormats();
 
@@ -38,24 +43,24 @@ class Date extends Base {
     foreach ($dateSelectors as $dateSelector) {
       if ($dateSelector === 'DD') {
         $html .= '<select class="mailpoet_date_day" ';
-        $html .= $this->getInputValidation($block, [
-          'required-message' => WPFunctions::get()->__('Please select a day', 'mailpoet'),
+        $html .= $this->baseRenderer->getInputValidation($block, [
+          'required-message' => __('Please select a day', 'mailpoet'),
         ]);
         $html .= 'name="' . $fieldName . '[day]" placeholder="' . __('Day', 'mailpoet') . '">';
         $html .= $this->getDays($block);
         $html .= '</select>';
       } else if ($dateSelector === 'MM') {
         $html .= '<select class="mailpoet_select mailpoet_date_month" ';
-        $html .= $this->getInputValidation($block, [
-          'required-message' => WPFunctions::get()->__('Please select a month', 'mailpoet'),
+        $html .= $this->baseRenderer->getInputValidation($block, [
+          'required-message' => __('Please select a month', 'mailpoet'),
         ]);
         $html .= 'name="' . $fieldName . '[month]" placeholder="' . __('Month', 'mailpoet') . '">';
         $html .= $this->getMonths($block);
         $html .= '</select>';
       } else if ($dateSelector === 'YYYY') {
         $html .= '<select class="mailpoet_date_year" ';
-        $html .= $this->getInputValidation($block, [
-          'required-message' => WPFunctions::get()->__('Please select a year', 'mailpoet'),
+        $html .= $this->baseRenderer->getInputValidation($block, [
+          'required-message' => __('Please select a year', 'mailpoet'),
         ]);
         $html .= 'name="' . $fieldName . '[year]" placeholder="' . __('Year', 'mailpoet') . '">';
         $html .= $this->getYears($block);
@@ -70,10 +75,10 @@ class Date extends Base {
 
   public function getDateTypes() {
     return [
-      'year_month_day' => WPFunctions::get()->__('Year, month, day', 'mailpoet'),
-      'year_month' => WPFunctions::get()->__('Year, month', 'mailpoet'),
-      'month' => WPFunctions::get()->__('Month (January, February,...)', 'mailpoet'),
-      'year' => WPFunctions::get()->__('Year', 'mailpoet'),
+      'year_month_day' => __('Year, month, day', 'mailpoet'),
+      'year_month' => __('Year, month', 'mailpoet'),
+      'month' => __('Month (January, February,...)', 'mailpoet'),
+      'year' => __('Year', 'mailpoet'),
     ];
   }
 
@@ -86,9 +91,9 @@ class Date extends Base {
     ];
   }
   public function getMonthNames() {
-    return [__('January', 'mailpoet'), WPFunctions::get()->__('February', 'mailpoet'), WPFunctions::get()->__('March', 'mailpoet'), WPFunctions::get()->__('April', 'mailpoet'),
-      WPFunctions::get()->__('May', 'mailpoet'), WPFunctions::get()->__('June', 'mailpoet'), WPFunctions::get()->__('July', 'mailpoet'), WPFunctions::get()->__('August', 'mailpoet'), WPFunctions::get()->__('September', 'mailpoet'),
-      WPFunctions::get()->__('October', 'mailpoet'), WPFunctions::get()->__('November', 'mailpoet'), WPFunctions::get()->__('December', 'mailpoet'),
+    return [__('January', 'mailpoet'), __('February', 'mailpoet'), __('March', 'mailpoet'), __('April', 'mailpoet'),
+      __('May', 'mailpoet'), __('June', 'mailpoet'), __('July', 'mailpoet'), __('August', 'mailpoet'), __('September', 'mailpoet'),
+      __('October', 'mailpoet'), __('November', 'mailpoet'), __('December', 'mailpoet'),
     ];
   }
 
diff --git a/lib/Form/Block/Radio.php b/lib/Form/Block/Radio.php
index 230812b247..fc446acd2b 100644
--- a/lib/Form/Block/Radio.php
+++ b/lib/Form/Block/Radio.php
@@ -2,24 +2,31 @@
 
 namespace MailPoet\Form\Block;
 
-class Radio extends Base {
+class Radio {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
 
   public function render($block) {
     $html = '';
 
-    $fieldName = 'data[' . $this->getFieldName($block) . ']';
-    $fieldValidation = $this->getInputValidation($block);
+    $fieldName = 'data[' . $this->baseRenderer->getFieldName($block) . ']';
+    $fieldValidation = $this->baseRenderer->getInputValidation($block);
 
     $html .= '<p class="mailpoet_paragraph">';
 
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
 
     $options = (!empty($block['params']['values'])
       ? $block['params']['values']
       : []
     );
 
-    $selectedValue = $this->getFieldValue($block);
+    $selectedValue = $this->baseRenderer->getFieldValue($block);
 
     foreach ($options as $option) {
       $html .= '<label class="mailpoet_radio_label">';
diff --git a/lib/Form/Block/Segment.php b/lib/Form/Block/Segment.php
index c316497258..77fd49863e 100644
--- a/lib/Form/Block/Segment.php
+++ b/lib/Form/Block/Segment.php
@@ -2,17 +2,24 @@
 
 namespace MailPoet\Form\Block;
 
-class Segment extends Base {
+class Segment {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
 
   public function render($block) {
     $html = '';
 
-    $fieldName = 'data[' . $this->getFieldName($block) . ']';
-    $fieldValidation = $this->getInputValidation($block);
+    $fieldName = 'data[' . $this->baseRenderer->getFieldName($block) . ']';
+    $fieldValidation = $this->baseRenderer->getInputValidation($block);
 
     $html .= '<p class="mailpoet_paragraph">';
 
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
 
     $options = (!empty($block['params']['values'])
       ? $block['params']['values']
diff --git a/lib/Form/Block/Select.php b/lib/Form/Block/Select.php
index b7a410d903..789a938c2a 100644
--- a/lib/Form/Block/Select.php
+++ b/lib/Form/Block/Select.php
@@ -2,19 +2,32 @@
 
 namespace MailPoet\Form\Block;
 
-class Select extends Base {
+use MailPoet\WP\Functions as WPFunctions;
+
+class Select {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  /** @var WPFunctions */
+  private $wp;
+
+  public function __construct(Base $baseRenderer, WPFunctions $wp) {
+    $this->baseRenderer = $baseRenderer;
+    $this->wp = $wp;
+  }
 
   public function render($block) {
     $html = '';
 
-    $fieldName = 'data[' . $this->getFieldName($block) . ']';
+    $fieldName = 'data[' . $this->baseRenderer->getFieldName($block) . ']';
     $automationId = ($block['id'] == 'status') ? 'data-automation-id="form_status"' : '';
     $html .= '<p class="mailpoet_paragraph">';
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
     $html .= '<select class="mailpoet_select" name="' . $fieldName . '" ' . $automationId . '>';
 
     if (isset($block['params']['label_within']) && $block['params']['label_within']) {
-      $label = $this->getFieldLabel($block);
+      $label = $this->baseRenderer->getFieldLabel($block);
       if (!empty($block['params']['required'])) {
         $label .= ' *';
       }
@@ -38,7 +51,7 @@ class Select extends Base {
       $isSelected = (
         (isset($option['is_checked']) && $option['is_checked'])
         ||
-        (self::getFieldValue($block) === $option['value'])
+        ($this->baseRenderer->getFieldValue($block) === $option['value'])
       ) ? ' selected="selected"' : '';
 
       $isDisabled = (!empty($option['is_disabled'])) ? ' disabled="disabled"' : '';
diff --git a/lib/Form/Block/Submit.php b/lib/Form/Block/Submit.php
index c8b45ddd37..a1bccb6608 100644
--- a/lib/Form/Block/Submit.php
+++ b/lib/Form/Block/Submit.php
@@ -2,14 +2,21 @@
 
 namespace MailPoet\Form\Block;
 
-class Submit extends Base {
+class Submit {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
 
   public function render($block) {
     $html = '';
 
     $html .= '<p class="mailpoet_paragraph"><input type="submit" class="mailpoet_submit" ';
 
-    $html .= 'value="' . $this->getFieldLabel($block) . '" ';
+    $html .= 'value="' . $this->baseRenderer->getFieldLabel($block) . '" ';
 
     $html .= 'data-automation-id="subscribe-submit-button" ';
 
diff --git a/lib/Form/Block/Text.php b/lib/Form/Block/Text.php
index acc4a7cd57..8ed106ea43 100644
--- a/lib/Form/Block/Text.php
+++ b/lib/Form/Block/Text.php
@@ -2,7 +2,14 @@
 
 namespace MailPoet\Form\Block;
 
-class Text extends Base {
+class Text {
+
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
 
   public function render($block) {
     $type = 'text';
@@ -14,23 +21,23 @@ class Text extends Base {
 
     $html = '<p class="mailpoet_paragraph">';
 
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
 
     $html .= '<input type="' . $type . '" class="mailpoet_text" ';
 
-    $html .= 'name="data[' . $this->getFieldName($block) . ']" ';
+    $html .= 'name="data[' . $this->baseRenderer->getFieldName($block) . ']" ';
 
-    $html .= 'title="' . $this->getFieldLabel($block) . '" ';
+    $html .= 'title="' . $this->baseRenderer->getFieldLabel($block) . '" ';
 
-    $html .= 'value="' . $this->getFieldValue($block) . '" ';
+    $html .= 'value="' . $this->baseRenderer->getFieldValue($block) . '" ';
 
     $html .= $automationId;
 
-    $html .= $this->renderInputPlaceholder($block);
+    $html .= $this->baseRenderer->renderInputPlaceholder($block);
 
-    $html .= $this->getInputValidation($block);
+    $html .= $this->baseRenderer->getInputValidation($block);
 
-    $html .= $this->getInputModifiers($block);
+    $html .= $this->baseRenderer->getInputModifiers($block);
 
     $html .= '/>';
 
diff --git a/lib/Form/Block/Textarea.php b/lib/Form/Block/Textarea.php
index cea6ba0503..a241b39e9a 100644
--- a/lib/Form/Block/Textarea.php
+++ b/lib/Form/Block/Textarea.php
@@ -2,27 +2,34 @@
 
 namespace MailPoet\Form\Block;
 
-class Textarea extends Base {
+class Textarea {
+  /** @var Base */
+  private $baseRenderer;
+
+  public function __construct(Base $baseRenderer) {
+    $this->baseRenderer = $baseRenderer;
+  }
+
   public function render($block) {
     $html = '';
 
     $html .= '<p class="mailpoet_paragraph">';
 
-    $html .= $this->renderLabel($block);
+    $html .= $this->baseRenderer->renderLabel($block);
 
     $lines = (isset($block['params']['lines']) ? (int)$block['params']['lines'] : 1);
 
     $html .= '<textarea class="mailpoet_textarea" rows="' . $lines . '" ';
 
-    $html .= 'name="data[' . $this->getFieldName($block) . ']"';
+    $html .= 'name="data[' . $this->baseRenderer->getFieldName($block) . ']"';
 
-    $html .= $this->renderInputPlaceholder($block);
+    $html .= $this->baseRenderer->renderInputPlaceholder($block);
 
-    $html .= $this->getInputValidation($block);
+    $html .= $this->baseRenderer->getInputValidation($block);
 
-    $html .= $this->getInputModifiers($block);
+    $html .= $this->baseRenderer->getInputModifiers($block);
 
-    $html .= '>' . $this->getFieldValue($block) . '</textarea>';
+    $html .= '>' . $this->baseRenderer->getFieldValue($block) . '</textarea>';
 
     $html .= '</p>';
 
diff --git a/tests/unit/Form/Block/SelectTest.php b/tests/unit/Form/Block/SelectTest.php
index b4faf7c817..cb63b27699 100644
--- a/tests/unit/Form/Block/SelectTest.php
+++ b/tests/unit/Form/Block/SelectTest.php
@@ -2,8 +2,8 @@
 
 namespace MailPoet\Test\Form\Block;
 
+use MailPoet\Form\Block\Base;
 use MailPoet\Form\Block\Select;
-use MailPoet\Form\Util\FieldNameObfuscator;
 use MailPoet\Models\Subscriber;
 use MailPoet\WP\Functions;
 use PHPUnit\Framework\MockObject\MockObject;
@@ -18,16 +18,19 @@ class SelectTest extends \MailPoetUnitTest {
   /** @var MockObject | Functions */
   private $wpMock;
 
-  /** @var MockObject | FieldNameObfuscator */
-  private $fieldNameObfuscatorMock;
+  /** @var MockObject | Base */
+  private $baseMock;
 
   public function _before() {
     parent::_before();
     $this->wpMock = $this->createMock(Functions::class);
     $this->wpMock->method('escAttr')->will($this->returnArgument(0));
-    $this->fieldNameObfuscatorMock = $this->createMock(FieldNameObfuscator::class);
-    $this->fieldNameObfuscatorMock->method('obfuscate')->will($this->returnArgument(0));
-    $this->selectBlock = new Select($this->fieldNameObfuscatorMock, $this->wpMock);
+    $this->baseMock = $this->createMock(Base::class);
+    $this->baseMock->method('getFieldName')->will($this->returnValue('select'));
+    $this->baseMock->method('renderLabel')->will($this->returnValue('<label></label>'));
+    $this->baseMock->method('getFieldLabel')->will($this->returnValue('Field label'));
+    $this->baseMock->method('getFieldValue')->will($this->returnValue('1'));
+    $this->selectBlock = new Select($this->baseMock, $this->wpMock);
     $this->block = [
       'id' => 'status',
       'type' => 'select',