Translation of etcetera in German

Sometimes you forget one word and this makes the entire sentence sound differently. That means that you need to read each email before sending it twice at least if you want to be on the safe side every time.
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?
These are very good images, please send me more... I think Oslo is a very calm city. Every day it is getting more international and culturally richer. I work as a general secretary in a law firm.