is your email webmail? if so and you want to bookmark the page...
go to the page
click bookmarks at the top left of firefox
choose 'bookmark this page'
a box pops up, choose folder - a drop down appears, choose
"bookmark toolbar"
then click done
you can shorten the 'name' to 'mail' so it doesn't take up the whole toolbar
for the the font
go to tools
options
content
then fonts and colors