<p>Most of these are spam, but at least one definitely isn't.</p><p>Before I incur the wrath of non-Gmail users, let me just note that this tip also applies to Hotmail, Outlook.com, Yahoo, and so on. But because I'm a Gmail user myself, and that's where my story begins, that's where I'm putting my focus.</p><p>When was the last time you checked your spam filter? I ask because until recently, I hadn't looked at mine for months. That's because I use Gmail, and the service is so good at keeping junk out of my inbox, I pretty much forgot spam existed.</p><p>But a few days ago, I went searching for an email that never arrived, and wondered if perhaps it had gotten caught in Google's filter.</p><p><a href="http://www.pcworld.com/article/2040415/gmail-tip-dont-forget-to-check-your-spam-filter.html">Keep reading...</a></p><p>Read also:</p><p><a href="http://howto.cnet.com/8301-11310_39-57586777-285/deter-phishing-attacks-by-consolidating-your-contacts/">Deter phishing attacks by consolidating your contacts</a> (CNET)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dvSV_9UrOK7-jIM4QbtVtzAQcyR3M&ned=us">2 additional articles.</a></p>