diff --git a/lib/mock-nexmo.js b/lib/mock-nexmo.js
index 6f6a9e70c..d5de0be23 100644
--- a/lib/mock-nexmo.js
+++ b/lib/mock-nexmo.js
@@ -39,7 +39,8 @@ function MockNexmo(log, config) {
 
         // HACK: Enable remote tests to see what was sent
         mailer.sendMail({
-          from: `sms.${senderId}@restmail.net`,
+          from: config.smtp.sender,
+          sender: config.smtp.sender,
           to: `sms.${phoneNumber}@restmail.net`,
           subject: 'MockNexmo.message.sendSms',
           text: message