It’s a simple process, and you only have to do it once.
snag the Firefoxmenuin the upper-right corner, then chooseOptions.
verify theGeneraltab is highlighted.
Select theCheck your spelling as you typecheck box under theLanguageheading in theLanguage and Appearancesection.
The change is saved automatically.
Go to theMenuicon in the upper-right corner of the Chrome web client and selectSettings.
Scroll to the bottom of theSettingsscreen and selectAdvanced.
In theLanguagessection, turn on theSpell checktoggle.
The changes are saved automatically.
Go toEditon the Safari menu bar and selectSpelling and Grammar.
If you don’t seeEditas an option, select theSettings gearin the upper-right corner and chooseShow Menu Bar.
SelectCheck Spelling While Typing.
Optionally, selectCheck Grammar With Spelling.
Can You Spell Check Yahoo Mail Messages?
Yahoo Mail doesn’t include a spell checker.
When an error is found, the web app displays a red line beneath the problem word.