As i tested almightyruler, (i made few withdrawal today) sometimes email was not received (around 2/10 for me), but after few hours the withdrawal is auto-cancel and once i tried again to withdraw, i got the mail and it worked.
Thanks for the suggestion, I tried again and this time the mail delivery attempt began about 2 seconds after I clicked Withdraw.
Another gotcha is that if you try to reload the balance page when you've been logged out due to inactivity, nothing happens - the page never loads. It's like the site is down. I thought it actually was down until I tried the URL in another browser.