I had sent an express mail to my friend several days ago, which contained some documents. After checking online, I can see the express mail has been delivered. Now I'd like to write an email to my friend to ask her about it.
When referring to the delivery, should I ask her if she "accepted the documents", "signed the documents", or something else?
In Chinese, we usually say something like "Have you signed and accepted the express mail?" But I'm not sure what the proper way is to say it in English.