Some thoughts: * you're likely to get killed on postage costs. Big bulk mailers get better rates by pre-sorting and barcoding mail (and by having lots of volum

Some thoughts: * you're likely to get killed on postage costs. Big bulk mailers get better rates by pre-sorting and barcoding mail (and by having lots of volume), which is going to be harder here. * marketers care a lot about reach, and this approach means that the reach you can provide to them is strictly bounded by the reach your company has. Unless you've got the best SEO team ever, that's not going to be compelling. * the sample promo on your site reads like it's intended to be geotargeted - so people in Peoria get codes to businesses in Peoria. This is a good idea on paper, but means you've got a massive chicken-and-egg problem; unless your initial site marketing is also very geotargeted you're going to have a massive challenge matching your initial advertisers to consumers in the same area. * building on that: if Peoria Barbers wants to get coupons to people in their area there are a LOT of other approaches that will get more impressions much more readily. As you've noted, these are not opt-in - but they can be targeted with all the existing marketing tools versus relying on your company's marketing to get prospects. * I'd recommend looking into how many photos people print at a time - my zero-data guess is that the distribution is bimodal, with a bunch who print none and a bunch who print a lot. If that's backed up by data it's a problem for your startup; eight photos is more than the first group has interest in printing but far less than what the second group wants. * I'll second the other poster who recommended a LOT of content-filtering and/or address verification: randos have used the FedEx "free mailing supplies online" tool pretty extensively to annoy people, and that didn't even allow uploading shock images.