diff --git a/src/mailer.js b/src/mailer.js
index 2b8295f68..f1e56b292 100644
--- a/src/mailer.js
+++ b/src/mailer.js
@@ -31,8 +31,7 @@ const assert = require('assert'),
     nodemailer = require('nodemailer'),
     path = require('path'),
     safe = require('safetydance'),
-    translations = require('./translations.js'),
-    util = require('util');
+    translations = require('./translations.js');
 
 const MAIL_TEMPLATES_DIR = path.join(__dirname, 'mail_templates');
 
@@ -70,8 +69,7 @@ async function sendMail(mailOptions) {
         }
     });
 
-    const transportSendMail = util.promisify(transport.sendMail.bind(transport));
-    const [error] = await safe(transportSendMail(mailOptions));
+    const [error] = await safe(transport.sendMail(mailOptions));
     if (error) throw new BoxError(BoxError.EXTERNAL_ERROR, error);
     debug(`Email "${mailOptions.subject}" sent to ${mailOptions.to}`);
 }