Error while sending message! Please contact Zoho mail support.

Error while sending message! Please contact Zoho mail support.

This is a message that is appearing all day in red at top of emails

Also, Zoho has been very slow, and had to give up at one stage trying to open Draft emails

Did get a Zoho Oops pop-up with message saying there was a problem at one stage today too

Any ideas whats going on?

Regards

Patrick