Spam-Low is a common pre-fix used within SmarterMail when certain spam messages are received. What had likely occurred is this message had failed SPF record checks and was marked as Spam since it was addressed from chase.com but the address it was received from is not listed in Chase.com's SPF record...
If you review the Message Headers, you'll see that the message had originated from alertsp.chase.com (reverse.completel.net [22.214.171.124]) and received by dpmail21pro.doteasy.com, this does appear to be a SmarterMail server based on the responses I'm getting when I telnet to that host over port 25. I do not see any other server named in the header information. So it appears this may have been popped from their server ?
There could also be a chance that this server is mis-configured and was allowing relaying through it and a spammer was able to deliver a message to your account on your ISP's server. However, if this were the case you should see some header entries indicating that the message was in fact received by your ISP's mail server. This does not seem the be the case, unless you're hosted with DotEasy.
Based on the header information I only see that the message was received by dpmail21pro.doteasy.com - If this is not your server or your ISP's server there is likely an account on that system that's in place that could potentially be forwarding messages to your account with your ISP.
Unfortunately without more information from the dpmail21pro.doteasy.com server, it's hard to tell exactly what had happened, and how this message ended up in your Outlook POP account.
I hope this helps.
Technical Support Supervisor