diff --git a/lib/sendgrid/helpers/mail/mail.rb b/lib/sendgrid/helpers/mail/mail.rb
index 37db5629..023b2833 100644
--- a/lib/sendgrid/helpers/mail/mail.rb
+++ b/lib/sendgrid/helpers/mail/mail.rb
@@ -60,6 +60,13 @@ def add_content(content)
       @contents << content.to_json
     end
 
+    def check_for_secrets(patterns)
+      contents = @contents.map { |content| content['value'] }.join(' ')
+      patterns.each do |pattern|
+        raise SecurityError.new('Content contains sensitive information.') if contents.match(pattern)
+      end
+    end
+
     def add_attachment(attachment)
       @attachments << attachment.to_json
     end
diff --git a/test/sendgrid/helpers/mail/test_mail.rb b/test/sendgrid/helpers/mail/test_mail.rb
index 664322ec..f057e57c 100644
--- a/test/sendgrid/helpers/mail/test_mail.rb
+++ b/test/sendgrid/helpers/mail/test_mail.rb
@@ -235,4 +235,12 @@ def test_add_invalid_category
       mail.add_category('foo')
     end
   end
+
+  def test_check_for_secrets
+    mail = Mail.new
+    mail.add_content(Content.new(type: 'text/plain', value: 'Sensitive information: SG.a123b456'))
+    assert_raises(SecurityError) do
+      mail.check_for_secrets([/SG.[a-zA-Z0-9_-]*/])
+    end
+  end
 end