请教一下大家，我给美国客户发了样品，他前天收到了，我是不是该今天跟踪一下，邮件该怎么写？我这样写是不是有点太过委婉了？
Sorry for trouble you.
We know that you are very busy, just following up whether you received our samples.
Any questions pls don't hesitate to contact with us.
Thank you.
大胆直接点问
不要说 Sorry for trouble you.
We know that you are very busy, just following up whether you received our samples.
Any questions pls don't hesitate to contact with us.
Thank you.
这样子感觉自己好弱弱的
