I find that a solution for those who send 72 dpi not to size is just print out a color version and ask them to sign off on it. The apparent pixel mess they see can be recreated on their end with a black and white printer. Can't tell you how many times artists have reduced the original file so it is small enough to email! Do the calcuations to get to the percentage of enlargement. Then have them print it out at the enlarged percentage, When asked to fix it, bow out. Unless you are certain you can recreate it perfectly it will just lead to approval issues, color issues, quality. Same with Business card art, it is not a printer's problem. No matter the service motto, you lose money on poor art and customers as well when it looks nothing like their monitor. Business card Art - I price it high enough to make money, painful enough so they get it right or get someone else to do it. Imagine receiving an outstanding band design with guitars, fire, dragons, and goth metal all over at 72DPI a day before the opening tour concert. Not the printers responsibility, yet since we are last in the production line we look like the bad guy if it isn't done. Tough to say no to a customer, but I have done the 24 hour shift before and it didn't pay enough to pull a 2 day shift! Hence, any customer gets the full art checklist with a warning that deadlines are dependent on receiving the art to spec. One box not checked off and we don't print. I also ask them to have their artist initial next to all the specs, and yet still get 72 dpi. We made those companies send us the artist for 1/2 a day to work in the sep dept. Seems to fix things. Some artists don't even know how to send large files! WOW. Square one for art file transmission.
Al