What is
https://www.pages04.net/ ?
WMF has given them a copy of (a subset of..?) the donor email list, as
this link has Peter's email address on the page:
https://www.pages04.net/wikimedia/WMFUnsubscribe/Unsubscribe?spMailingID=52…
If you dont want to try that link, the following will give you a
general idea of the form donors are being directed to:
https://www.pages04.net/wikimedia/WMFUnsubscribe/
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John Vandenberg