网上找的关于什么是 waiver of service. 不时上面有人说得什么收到文件的确认。

A waiver of service is when a defendant agrees to save the plaintiff the time and expense for paying a court official or other legal party to serve a complaint. The defendant who waives service agrees to waive objections to not being served with a summons, but the party does not waive other objections pertinent to the lawsuit. Plaintiffs often request a waiver of service from the defendant in cases where both parties desire to reach a resolution in court. A defendant can refuse a request for waiver of service, which would require the plaintiff to serve the complaint and summons, using the methods allowed by court rules and procedures. If a defendant agrees to waive the service, then he must submit an answer within a specified period of time from when the request was sent.