I've used it for letting customers know that artwork is ready for approval on a custom printing site. We give them the option of notification between email, tex

I've used it for letting customers know that artwork is ready for approval on a custom printing site. We give them the option of notification between email, text, and browser notification and our artists average creating a proof for approval in under an hour. Last time I checked, we have about 5% of people opt for browser notification only which is higher than I expected.