I am not getting emails from my WordPress site

[msbsurfi]

I have a scheduled email to get from UpdraftPlus plugin which summarize the daily backup report to admin email (site admin) . I received those emails previously everyday but not getting for few days. Also no mail arrives in inbox.
Today my site having a critical error. The white page shows " Your site having critical error. PLEASE CHECK ADMIN EMAIL INBOX" But I have no mail in inbox or spam box. This means no emails are being sent from the host.

Now my site is ok. But there is problem in receiving admin email.
Username: yusmgvjo @x12

 

[Anna]

Are you still having problems with recieving emails? I know there was some issue with mailserver a while back, not sure it is related though.

 

[eduplus]

No, I have just checked it. My latest backups are at 10:41 am BST. But the last email that I have received from my site (UpdraftPlus) was on 24 January. It is sure that I am not getting admin emails from server.