Replying to all resumes would be the polite thing to do, but often it simply isn't practical. If a company receives 200 responses for an ad, or experiences a continual deluge of unsolicited resumes, it would spend an inordinate amount of time sending acknowledgments. If you really want a receipt for your resume, send a stamped, self-addressed postcard asking for one. If you make it easy, the human resources department will comply.

It is easier to do a job right than to explain why you didn't
Martin Van Buren

We're supposed to be perfect our first day on the job and then show constant improvement.
Ed Vargo major league baseball umpire