Help - no sent mails coming through

I have set up eM client to manage mail through 1 and 1. My friend and I both access this account via separate laptops and our smartphones. nIcoming mail co-ordinates fine but not sent messages. I am replacing my laptop and have installed eM but the sent mail has not imported at all. Can you advise please?

Are you using IMAP or POP protocol? I am asking because synchronization of Sent emails is not possible when using POP protocol …