And just as a postscript to all of this. I am, as I type this, in the middle of trying to forward the government's green voucher confirmation to an approved contractor so they can start the work. But this government email is being bounced by the contractor's Spam filter.
It is literally nothing more than a genuine and expected email from a government department being sent to a company who's job it is to receive and act on said email..
<bounce>