Is it safe to send the documents by mail?

This is a frequently asked question.
My own experience has been great, I sent in my originals twice and got them back safely. I have heard some horror stories but you have to look at them in the whole context of the number of applications being submitted and processed.
In my opinion the process is safe, however, if you are uncomfortable - don't do it.

If you apply by mail you get your originals documents back in about two weeks - ten business days.