While, technically, you can order letterhead as a flyer, we don’t offer a product specifically for “letterhead” because it’s impossible to guarantee that you will be able to use them as letterhead. We have to buy special paper that is rated for our high speed digital printing equipment (which is all toner based). Whether or not the toner and/or the paper that is available to us will end up being compatible with whatever device you end up using to print on them afterwards is difficult/impossible to predict. With the paper supply shortage, we aren’t able guarantee that if you order a proof and test it that we could provide the exact same brand of paper and/or color mix when you place a full order. Paper printed with high speed digital production printers are not always compatible with a desktop color printers which often have temperature settings that can melt the toner used on the letterhead.
You could order flyers and then they could end up not being printable on your printer if it’s not compatible with the printer – IE your printer could melt the toner or smear it or a multiple other issues can go wrong.