Tony I am wondering if it might be an idea to alter the frequency of emails when uploads fail. Mine started last night after I had gone to bed and this morning I had 20+ emails about it. Perhaps you could adapt the frequency of emails according to how long uploads have failed for, so for the first hour you send 6, after that only sending maybe one per half hour for a couple of hours and the hourly if still has not restarted. If this happened while I was on holiday it could be days before I saw it and would flood my inbox on the server with emails.
Stuart