I clicked the 'unsub' link in the footer of this particular marketing email and hit: 1) an SSL warning from Chrome, and 2) a 404 on accepting the SSL warning.
I've yet to know a "partnership connection" email solicited in any way, shape or form, for what it's worth. Even when the partnership is tight (example: I recently received an email from Radiohead's Thom Yorke. I bought In Rainbows when it was released 6 years ago, and the mail got sent to the address I provided back then [my recollection is fuzzy, but it was likely necessary to get a/the download link]. The connection is strong, but I still consider it to be spam.)
It stinks because our intentions were to get people excited about what's to come... instead you want to strangle me with my power cord.
ahhh... some days...
Patrick Moran VP, Marketing New Relic