Recently I switched from Thunderbird and so far really love native Mail.app which is quite lightweight to my surprise!
However the transition seems a bit hard as the size of the font while editing messages is too small for me... Can I have two different font sizes - one for editing and other for actual font size with which messages are sent?
EDIT: My os is 10.6.8, but if you know the solution for 10.7.x, please share it as well :)