diff --git a/app/mailers/application_mailer.rb b/app/mailers/application_mailer.rb
index 5d28ad5a4..c165302bf 100644
--- a/app/mailers/application_mailer.rb
+++ b/app/mailers/application_mailer.rb
@@ -19,7 +19,7 @@ class ApplicationMailer < ActionMailer::Base
   rescue_from(*ExceptionList::SMTP_EXCEPTIONS, with: :handle_smtp_exceptions)
 
   def smtp_config_set_or_development?
-    ENV.fetch('SMTP_ADDRESS', nil).present? || Rails.env.development?
+    ENV.fetch('SMTP_ADDRESS', nil).present? || ENV.fetch('RESEND_API_KEY', nil).present? || Rails.env.development?
   end
 
   private