diff --git a/src/Context/ContextDefinition.php b/src/Context/ContextDefinition.php
index 1ff4d44..c364326 100644
--- a/src/Context/ContextDefinition.php
+++ b/src/Context/ContextDefinition.php
@@ -21,6 +21,7 @@ class ContextDefinition extends ContextDefinitionCore implements ContextDefiniti
     'multiple' => 'isMultiple',
     'required' => 'isRequired',
     'default_value' => 'defaultValue',
+    'form_element' => 'formElement',
     'constraints' => 'constraints',
     'allow_null' => 'allowNull',
     'assignment_restriction' => 'assignmentRestriction',
diff --git a/src/Form/Expression/ContextFormTrait.php b/src/Form/Expression/ContextFormTrait.php
index e535ba9..46d4e33 100644
--- a/src/Form/Expression/ContextFormTrait.php
+++ b/src/Form/Expression/ContextFormTrait.php
@@ -49,7 +49,7 @@ trait ContextFormTrait {
       $default_value = $context_definition->getDefaultValue();
     }
     $form['context'][$context_name]['setting'] = [
-      '#type' => 'textfield',
+      '#type' => isset($context_definition->formElement) ? $context_definition->formElement : 'textfield',
       '#title' => $title,
       '#required' => $context_definition->isRequired(),
       '#default_value' => $default_value,
diff --git a/src/Plugin/RulesAction/SystemSendEmail.php b/src/Plugin/RulesAction/SystemSendEmail.php
index e8cc4b8..d0c215a 100644
--- a/src/Plugin/RulesAction/SystemSendEmail.php
+++ b/src/Plugin/RulesAction/SystemSendEmail.php
@@ -29,6 +29,7 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
  *     "message" = @ContextDefinition("string",
  *       label = @Translation("Message"),
  *       description = @Translation("The email's message body."),
+ *       form_element = "textarea",
  *     ),
  *     "reply" = @ContextDefinition("email",
  *       label = @Translation("Reply to"),