Translation of conception in German

It would be an advantage if you could send it via DHL, UPS or another Currier, because the parcel was lost once when we sent it with regular mail. Please send me a reference number after you send it.
Yes, but I was unable to work on this yesterday, and today will be almost impossible too. Between tomorrow and Sunday you'll have quite a few more entries in the system. I just wanted to know how it is going.
I understand your English, it's not bad at all. Yes, the English vocabulary is much larger than the German. The more you might spend time using the language, the better your vocabulary knowledge will become.