Split from this thread.

When I send an email it always uses an address that does not exist anymore.  Example is an old gmx.com account that I cancelled years ago but still haunts me to this day.  Anyone using the reply to email that I send gets it returned as not available.  I have tried everything that I know of.  Even  though I have purchased a new computer and installed windows mail again it persists.  Tried logging in using the gmx account but tells me it does not exist.   How does one delete reply address from windows live mail.