I'm working on delivering this feature at the moment with https://impactscope.com/
The platform isn't live yet so stay tuned.
This is a little different, but may help in addition to your strategy. If you use smile.amazon.com, then you select a charity for Amazon to donate .5% of your purchase price to.
I'm working on delivering this feature at the moment with https://impactscope.com/
The platform isn't live yet so stay tuned.