I set up IMAP+SMTP using SSL account on my HP x3 with latest official updates and the app won't send emails from this account. It gets into 'your account is out of date' or some such loop and that's it. It works on my Surface Book, it works on my L1520 with WP8.1, only on the X3 Elite it does not. Elite? Pariah more like it. It's a bug in a very basic functionality, that they should be able to program in their sleep. I reported it to MS, but I am not holding my breath. I have always been a fan of MS products, but it's getting increasingly difficult to find some enthusiasm left.