Cannot get mail today

[#1]

I had a short period last night when the website was slow to navigate but no problems with email.  All working well this morning.

[#2]

Thank you for replying Artmo 
Sadly I still have no emails and no response from Support since the middle of the night!

[#3]

Is it worth a phone call to CS?  The number is 0114 296 5198.  They seem slow in getting back to you.

[#4]

To be fair, the response to my original query (11pm) was around 2am - I responded with the details they'd asked for just after 9am this morning.
I may be reduced to making the call though I was trying not to - I thought using the Help Assistant was preferred.
Update
Have just spoken to Support - he's adjusted the 'Catch All' setting and I can now send myself emails although I had done nothing to this setting previously - didn't know it existed!
Now wondering what's happened to all the emails I usually get every day...
Apparently they've been lost forever...

[#5]

Is there something going on with the email servers? I haven't had any email yesterday at all.. I use thunderbird, but I've been checking my inbox through webmail and still nothing. I've try a test message to myself but still nothing. I know that there are planned maintenance today, is my problem a possible symptom?

[#6]

not aware of any service-wide problems. I'll take a look at your account now @merlin152 and see if I can figure out what's going on...
Edit: taken a look and can't see any problems. Have sent a message to both mailboxes on the account and in each instance the email arrived in the respective Inbox almost immediately

[#7]

Thanks Bob,
I found the problem, It was an external problem with my domain host. I fixed it.. Everything was working perfectly a couple of days ago, I have no idea what happened. 
One of those great mysteries of the internet!!