This way you can compare like for like and figure out what is actually causing the increase/decrease for the CTR.
As it stands, the article didn't include enough data to see if their changes actually fixed the situation.
This way you can compare like for like and figure out what is actually causing the increase/decrease for the CTR.
As it stands, the article didn't include enough data to see if their changes actually fixed the situation.
True. The overall CTR dropped. The main difference b/n the two emails was having that button. Stats showed a low # of clicks to that button vs. other links.
That said, it also looked like that was the only way to see if the changes worked. So the button itself could have made your percentage change down, but the rest of the ad make it change dramatically up, so overall the effect is up. But, if the lesson you learned was button = less CTR and didn't test the rest of the changes, it might hurt you in the long run.
Believe or not, I didn't even realize the emails were advertising the same product.