Question

我写给别人的英文信件,帮我看看英语有什么错误,请指出并修改,能说明一下更好~

Answer 1

（注：有*号的单词就是修改过的）

I have* contacted Jim. He will send me* the details of their company by* tommorrow afternoon. And* he will make* payment* after receiving* the invoice. But both he and I would like to know whether the payment is to be made to us or to the advertisement company. （最后一句基本上是整句修改过了）