Spell checker in webmail

Dear freelancer, We are looking for someone to enable us to use an online spell checker for our webmail-service at [login to view URL] ([login to view URL]). We need English, Deutsch, Danish and Norwegian as a minimum. One possibility could be to use the Open Source spell checker at [login to view URL] and somehow integrate this into the webmail-feature. But feel free to think out of the box ;) Thanks!