This may or may not work for your list, but…
It can be effective for most marketers.
If you’re not getting the open rates you seek, try using a negative headline.
For example, instead of…
You’re going to love this product
This works amazing and even does the dishes
Having an awesome day, here’s why
Try something more like these:
You’re going to hate this product, here why…
This SEO product sucks (it won’t even do the dishes)
She was having a REALLY bad day (and then it got worse)
Of course, they’re going to ‘hate the product’ because it does a lot of the work for them, and now they have nothing to do.
The SEO product sucks because ‘it said it does EVERYTHING,’ but all it does it get your site to Page 1.
And she’s having a really bad day, and it’s not even her fault, because… (You fill in the blank.)
Try using a negative headline of your choosing in 10% of your emails, and then compare open rates and clickthrough rates.
You might get some very positive results.