Are you using a third party email client (Outlook, Thunderbird, etc.)? Or you are just using our Post Office?
Please PM us the date of the emails that you want to recover and we'll check it further. It may or may not be recovered once it is deleted on our server, but we'll still try.
Many thanks Basil. I use Outlook 2013 usually (I have several machines). I deleted by accident. I also check frequently via the TPG Post Office (mainly to see how the spam filters I set up are working). However, I have now found an old printed copy of that email and attachment and have used that, so I don't now need you to help retrieve that email..
Many thanks for offering to help!