Neat Messages for Gmail is a Chrome Extension that puts plain text emails in a neat container where you can comfortably read them. In the meantime, HTML emails that are designed and have everything looking nice will be left unchanged.
It just works!Cons:
It really makes reading regular emails easier.
The text width*, font size and line hight are perfect.
*The 10 words per line typography rule is indeed applied, which makes things far more readable.Joro Yordanov has used this product for one week.