Hello :O)

I have a client who uses outlook 2007 to receive email at work, on his laptop and on his home computer.
few days ago he complained that he started to get emails on his home computer with a delay of about a day. on his laptop and on his work computer it works well. There were no changes made to his home computer.
I thought I would install him windows live mail instead of the outlook 2007 client, But i'm afraid he needs the outlook because he syncs his android device with it's calendar.
I would appreciate a suggestion to revive his outlook.

Thank you