I've had a spotify account since 2011, in 2012 I decided that I would not use this service and opted myself out of all communications. The last legit email I got was from Spotify on on 2012/07/19 and then I haven't heard anything.
To my surprise Spotify decided to send me an email on 2013-10-02 after more than a year of silence. There was no unsubscribe link, just a link to manage my subscriptions in my account.
So here's what happened: I had an unused account that was opted out of everything and Spotify decided to opt me in and make it so the only way to opt out is by retrieving password and logging on. This is clearly a scheme to get people to log back on but it is not respectful of those people's time or privacy choices.
As such I've made a request for my account to be deleted. I simply don't trust Spotify to have my information because they pull shady moves like this.
Many FUs to the spotify spam team. Thanks for wasting 5 minutes of my day, assholes.