Originally Posted by
Orange County Commuter
Sounds like the problem may be in Outlook not Delta. If so there's not much Delta can do.
They do have an alert about passwords and another to protect your data on their website.
Use a desktop email client and have all emails fetched and removed from the server every 1 minute.
Microsoft and others make bank selling annual and monthly subscriptions for cloud-based services and none will ever be more secure than storing information on an offline computer that you have in your possession.