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!
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.