Had this email come through from an SEO company (which no doubt I'm not the only one that gets bombarded on a daily basis) but I thought this was a good one, and hesitated over the delete button.
It's a great play on the legal ambulance chasing industry, and first time I've seen it applied somewhere else.
Subject
No Win No Fee - Google Manual Penalty Recovery
Regardless of if you have had a manual penalty or not, it might make you think that these SEO bods actually know what they are doing, and may encourage you to open the email and read on.
I won't name the company as they did some work for us a long time ago, and personally I thought they were useless, but I guess they may have improved...
Subject lines are always the frontline of any email marketing campaign. Have you spotted anything original lately, or seen any that stood out and made you hesitate from the delete button?