[petercooper]

I think it's on a par with getting an update every now and then from a store you've bought something from. The 'subscription' is rarely disclosed in this case, but there's understood to be a 'relationship'.

I had a look through MailChimp's TOS and it could be interpreted a few ways but this sort of 'existing relationship' thing is covered, although it pertains to a purchase rather than a freebie.

[obtu]

Even if I bought from a store it's not expected, and because I always look for the opt-out checkboxes, anything unexpected goes to the spam bin.

[fmx]

I don't want a relationship - I just want a one-night... transaction. If I just want to download the file I'll use a disposable email address just for the principle of the thing, even if it's a company I normally wouldn't mind hearing from.