Translation of zusammentreffen

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.
The easiest way of writing sentences in Spanish and English is to communicate with other people by email or by chat. I found the different time forms quite in Spanish very confusing at the beginning and it was the most difficult part.
My Spanish is weak, and I need to improve it here. But it is very difficult because I have many other things to do. I must take care of my family and my friends and have no time for Spanish.