Here is a take on how useless the government track and trace might be, with all the usual suspects involved screwing it up with cheapo solutions, wonder if Derco are using Citrix as its connectiuon backbone, there is a nickname for Citrix that starts with a colloquial term for excrement so replace C with Sh
Best not use any email, they can then send stuff at 12:59:59 pm the day before a hearing and say you had it unless you have something in writing saying they must not use that email for service of any or all documents.
We recommend getting all of your evidence together well before the court/WS submission dates. A WS takes more than a day for most people to write and have it refined here prior to sending. Best not to leave it to the last minute.