Zoho Mail is running very slowly

Zoho Mail is running very slowly

Just want to report that Zoho mail has running very slowly for the last few days.  It takes me around 25-30 seconds to download a 50kb file.
And to access my mail, it takes just under a minute before I even can read it.

It used to be much faster and have an almost instant response.  

Other sites I use (hotmail, googlemail, etc) have no problem whatsoever.  Unfortunately my work mail is linked to Zoho.  Will this be rectified?

Thank you.