Short answer: no.

Due to privacy issues, we do not share details about the Evite event, such as the name of the host or the event, with nonprofit donation recipients. At this time, we only share donor names (if they choose not to remain anonymous), donation dates, and donation amounts with nonprofits.

If you provide the nonprofit with your Evite event ID, they will be able to (with some work in Excel) see what donations came from your event.