Dan Hollis wrote: 

Phishing scheme didn't happen.

fedex has had a number of major compromises so it's not a stretch that 
their user database was stolen and sold to spammers.

The other possibility is that your one-off email scheme is predictable, and someone knows you use FedEx, and that someone is targeting specifically you, and this obvious phishing email is a red herring for the exploit you didn't see.

Be concerned.

-- S.C.