HELP - all email data has disappeared

I seem to have lost my account on em client. All data has disappeared.  Saying not synced?  Can anyone help me as this is my mail email I use for work. When the computer started up, it sometimes comes up it needs to do a database check, while it was checking I accidentally pushed cancel and since then have had no email account.  Any help would be appreciated.

If you go to Menu > Tools > Accounts and check if your email account is listed there. If it is not, add it again. If it is, and is setup as IMAP, just delete it then add it again.

To prevent the database check on start, it is best to close eM Client before shutdown of Windows. I personally think the cancel button should be removed from that dialogue. If a database check is being run, there is some reason for it to do so and cancelling can cause problems.