Are you on your iPad? If so open the email icon, go to the left side & there’s a list,should say inbox,sent etc, go to the junk & open then at the top it says edit, click that find the tradesmans email, tap on it then scroll down & a bar should pop up & a box should say move, tap that & then tap inbox. Voila it should now be in your inbox so now go back to the list at the side click on inbox ,this should open & you can now open the email you wanted. You might need to click on the pdf box at the bottom of his email once & then when it has whirred click again & it should open.