Hi - the first thing that strikes me - why do you use the phrase "a" email list as opposed to the grammatically correct "an" email list?

Some of your headlines are capitalised but some aren't.

Your articles are too short, they need to be around 1000 words.

Why are your articles not dated? Visitors need to know that its fresh content.

However, here's the major problem - I only checked two of your articles, but they were 100% copied and pasted from here https://22signs.com/

You definitely are focused on the list building niche. Couple of things that I would do.
1. Add more images
2. Add more titles for each post (h2, h3, h4)
3. The about page could be longer and add your image to make it more personal.
4. On the Author...add yourself and a brief about you
5. Add Featured Images to the blogs without images

That should help out a bit...