They're taking a 15% fee plus payment processing fees that might be just as high, for a total of 30%: "On average, 15% of each donation covers processing fees (

They're taking a 15% fee plus payment processing fees that might be just as high, for a total of 30%: "On average, 15% of each donation covers processing fees (varies by donation size). 15% goes to support Gated as a free service for everyone. The rest (70%) goes to the nonprofit chosen by the Gated user." (For small donations, this can be reasonable, especially if the processing fees are actual third party fees and not padded.) There's also a link that I expect to be heavily abused: "in the Challenge Email, there is a one-click solution for people you know personally to click and have their email delivered immediately." Overall, it's an interesting idea but likely will struggle with the risk of putting off the wrong person (e.g. an important business partner) being too high. https://www.gated.com/blog-posts/sellers-love-gated https://www.gated.com/blog-posts/sellers-love-gated has a screenshot of their challenge e-mail and I think they did find a pretty good wording. Another issue is that this (obviously) requires giving them access to your inbox, which not everyone (and in particular not every company) will be OK with - especially as if they get hacked, the attacker could get those access keys. Can keys be limited so they only have access to metadata? (Even then, metadata + the ability to send e-mail as someone is devastating because it can be used for spear phishing.) In general, I wish e-mail was easily sortable into categories like "response", "entirely human written individual e-mail sent to only me", "human written e-mail sent to a small group of people", "human written e-mail sent to a large group of people", "human e-mail using boilerplate text", "notification about human activity involving something that human wrote somewhere", "notification about anything else", "transactional e-mail", "service announcement", "newsletter", etc.