Lost week

[SimonM5]

On Saturday, 15/06, I logged into my Sky mail to find an inportant email only to find I have lost a weeks worth of emails. Anyone else had this problem? How can I fix this as I need to find an email that has disappeared 

[Mark39]

There have  been reports here before of Yahoo randomly deleting emails. They do have a recovery process here which might restore them: https://help.yahoo.com/kb/SLN2552.html?guccounter=1