Windows Live Mail

I am with Bell Sympatico and using Windows Live Mail. Three months ago, when I sent an email to myself (often do with links I want/need to keep), these messages all of a sudden stopped being received in my Inbox. Yes, they were all there in my Sent but never was received back into my Sympatico account. I contacted the help desk at Bell....that was an experience....and after about 1 1/2 hours of trying everything on my computer, the help desk finally corrected the issue. Of course I have no idea what he did to do so. Well, three months later, SOMETHING has triggered this issue to re-appear. As of yesterday, all email messages sent by myself to myself no longer appear in my Inbox. Yes, I could just keep the message that appears in my "Sent" folder but I am **** about things like this and want emails to once again be received into my Inbox where they should be. Any ideas of how to fix this ONCE AGAIN without spending 1 1/2 hours online with Sympatico's Help Desk? Thanks, Sharron