I have been using Windows Live Mail for around 2-3 months. I have it synced with my gmail account. 

I have been noticing that some emails seem to disappear completely. For example I will send an email, then later (say an hour) go to locate the sent item, and it is not in the sent items folder, outbox, drafts, anywhere. I am absolutely 100% sure that I have sent the email, but there is no record of it, and the person I have sent it to does not receive it either. 

It happens completely randomly.

Any ideas??

Thanks!