How Reliable is the Anti Spam Engine of GMail?

We all know how useful the anti-spam engines are that help us by handling most of the spam emails themselves and not let them make their way into our inbox. But what would you say if these anti-spam engines mark your legitimate emails as spam and because you don’t look inside your spam folder under the assumption that they contain only the REAL spam emails, you miss on genuine emails? You might face serious problems when one of these happens to you:

• You don’t look at your spam folder and lose an important email that was accidentally marked as a spam email.
• A genuine email is marked as a spam email and placed in spam folder which then automatically gets deleted after certain duration by your email service provider. In this case GMail!
• You receive a formal business inquiry and the email lands in your spam folder and the above point happens. You lose an opportunity!

One of these happened to me recently with GMail’s anti spam engine which somehow started to spam some of the genuine emails, sent to me, as spam and also marked emails from Google Webmaster and other Google sites that I have subscribed to, such as Inside Adsense emails. Now since this has happened, I have started to check my spam folder too.

My message to Google — Anti-Spamming is not primarily about preventing spam emails from landing into your inbox but mostly about letting the genuine emails come in. If you know what I mean!