Removing unwanted email from inbox–Windows live mail 2011

Received three email from 3 different unknown senders.  I can not delete, move to another folder, check properties  or mark as junk.  When I attempt any function I get an error message to the effect that "an error has occurred".  A restart on the computer or opening and closing live mail has not helped.  Just can't find a way to get rid of those message titles in the inbox