Should I write to EWD by registered post / with advice of delivery for safety reasons?
No. You can save yourself these unnecessary time and postage costs without worry! We always handle our inbox carefully and thoroughly. Whether your letter was sent by regular mail or as a registered letter with or without advice of delivery is completely irrelevant to us.
However, if you feel more comfortable having the receipt of your letter documented, we recommend sending it by fax as a cheaper alternative.