Back to the knowledge base
If an incoming email is classified as spam, there is a reason for it. To find out why a particular message has been flagged, you need to check the email header. You can do this via your email client or through webmail. Open the message and select "View source" or "Show headers".
In the example below, the email from Microsoft is completely harmless, as the "TotalSpamWeight" is 0 or lower.
From: "Microsoft Outlook"
Sender: "Microsoft Outlook"
To:
Subject: Microsoft Outlook Test Message
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0000_01D71033.944F9920"
Message-ID: <4ed3101591bc426e8710c117d78042ad@com>
X-SmarterMail-TotalSpamWeight: 0 (Authenticated)