Hi CivicMusicMilw,
This is a great question. If you're using a PayPal donation button, you can not require that the donor provides their address. The field will ask for it, but if they leave it blank, they can still donate. If you're using a third party shopping cart to collect donations, this could be set as a requirement to donate. Personally, I'd recommend allowing the option of donation without an address as well for those who do not wish to share it with you. However, it's still always nice to be able to say thank you. Hope this helps!
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