A call-to-action at the wrong time in the wrong place?

How do you feel when a pushy shop assistant approaches you the minute you enter a shop?

When an email consisting of nothing but a hard-sell call-to-action lands in your customer’s inbox, this probably makes them feel the same way.

“Register Now”
I recently received an email to promote an industry event out of the blue:

The “Register Now” link took me to a landing page that contained little information besides ‘who’, ‘what’, ‘when’ and ‘where’.