If you are not already in the habit of deleting liberally, I encourage you to start. It will only improve your writing. Delete one sentence, one paragraph, or if you’re daring enough, one whole page.
Whether you're a freelance writer looking for work, or a job candidate seeking to stand out from the crowd, how you communicate online could mean the difference between a $0 bank balance and a night on the town.
Every time I think of relying on data alone (A/B tests and Analytics results) to try to assess the 'best' subject lines of the month in order to figure out how to craft even more wildly successful subject lines, a little bit of my soul dies.
If you're a copywriter, a journalist a content marketer, or if you intend to do writing in any form in the future, you may want to try the approach that has come to work so well for me: Forget your reader and write entirely for yourself!