There are about 1470 recurring Adyen donors whose Civi name fields are just their email addresses. There may be more than one cause to this, but the great majority seem to be donors whose Contact Source = Silverpop + a banner name, so it may be related to how recurring Adyen donations merge into existing RML CIDs?
We did not hear much from donors about this after the end of year recurring Thank You email send, but this Task is a request to look at the process to see if it can be improved to avoid future requests from donors. I found the list by searching for 'recurring Adyen past 30 days + name %@'. Spot checking the list, they all look like Apple Pay donors.
Some RML examples:
cid=58356055
cid=47018312
cid=44572974
cid=42110835
Some examples from non-RML cids:
cid=58392130
cid=53038546
cid=44466383
Also, @SHust did some research at IBM and cid=58392130 does show an RML source there (but not in Civi), so maybe there is a related issue with RML signups migrating to Civi.