I opened a submital link from a trusted site that deals with work when i was finished with site, I saved it as a pdf to documents and when I returned to Fire Fox all my ibox emails are gone. Prior to saving the pdf I had just deleted all the trash emails that were removed from the inbox. So I need to recover the inbox that was not trashed. How do i recover the missing inbox emails?

edited email from public and search/spam bots view as nobody here will reply by email.