You might be talking to one now. :)
I checked my own account before giving up and just posted the csr link.
They had a real problem with their mailing lists a few years back, hopefully they have got it sorted out.
They generate a quite a bit of promo material. Since you already bought X2 I do not believe they will email you the X2 promos but you will get monthly sale stuff.
BTW, until you get on the newsletter you might want to periodically check the store for the monthly specials.