Translation of Hauswirtschaft

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.
Maybe we would need to say install our dictionary as a software? But I would say instead of install, use our dictionary as a software. So bottom line. If I use the singular form for newsletters and websites, I am on the safe side for both?
I live in Lörrach, a small town on the border of Switzerland, about 10 minutes drive from Basel and 50 km southeast of Freiburg. Where do you live? I would be happy if you would write back to me.