normalize email from

.env.example

@@ -70,8 +70,13 @@ ACCOUNT_CONFIRMATION_REQUIRED=false
 SHARE_CONFIRMATION_REQUIRED=true
 
 # smtp mailing
+# port 465 → tls
+# port 587 → starttls
 PUBLIC_URL=https://pad.example.com
 # SMTP_HOST=smtp.example.com
+#SMTP_SECURITY=none
+SMTP_SECURITY=starttls
+#SMTP_SECURITY=tls
 SMTP_PORT=587
 SMTP_USERNAME=
 SMTP_PASSWORD=