My eMail inbox is collecting received mails from several eMail accounts and therefore it’s not unusual to have duplicate messages in there.
This morning I had two eMails coming in to two different eMail accounts probably part of the same campaign but with different messages:
Apparently I have landed in two different segments with two different eMail accounts: One technology oriented and one sales and marketing oriented.
Record linking of sparse subscription profiles isn’t easy and even Informatica, a big player in Master Data Management and Data Quality solutions, have land to be covered in this game.
Liliendahl on Data Quality 
I’m surprised that they haven’t managed to de-duplicate the two Liliendahls on their database
That is on one hand true Jack. But it’s not unusual to see that data quality vendor’s marketing side doesn’t take own medicine.
On the other hand it might be that I have made one subscription in Denmark and one in the UK, which, if any deduplication rules were used, could make me a false negative.
I work for Informatica and the latter is exactly what happened, Henrik. It is in fact very possible to have two identical name individuals that reside in two countries. We are vigilant in the way we manage our internal data. I really enjoy your blog!