|Frontier Mail is a web-based email service, so if you had an icon for it on your Desktop, it's just an internet shortcut which you can easily re-create:|
Right-click Desktop and choose New > Shortcut.
In the location bar, type https://login.frontier.com/webmail/
For the name of the shortcut, type Frontier Mail
There should now be a world icon on the Desktop.
Double-click it & sign-in page for Frontier Mail should open.
To restore the Google Bar, just re-install it like you did the first time.