diff --git a/api/application.js b/api/application.js
index f2e3f61..2fdf762 100644
--- a/api/application.js
+++ b/api/application.js
@@ -19,6 +19,7 @@ const smtp = nodemailer.createTransport({
     user: process.env.SMTP_USER || 'noreply@jeffemmett.com',
     pass: process.env.SMTP_PASS || '',
   },
+  tls: { rejectUnauthorized: false },
 });
 
 // Email templates
diff --git a/api/waitlist-db.js b/api/waitlist-db.js
index c1bdfeb..fbb6043 100644
--- a/api/waitlist-db.js
+++ b/api/waitlist-db.js
@@ -19,6 +19,7 @@ const smtp = nodemailer.createTransport({
     user: process.env.SMTP_USER || 'noreply@jeffemmett.com',
     pass: process.env.SMTP_PASS || '',
   },
+  tls: { rejectUnauthorized: false },
 });
 
 const welcomeEmail = (signup) => ({