Activate Spell Check in Firefox
In order for Firefox to spell check your Yahoo Mail emails, you must activate the feature in the Firefox options. It’s a simple process, and you only have to do it once.
Activate Spell Check in Google Chrome
The spelling setup in Chrome is similar to the one in Firefox.
Activate Spell Check in Safari
Safari’s spelling setup is handled from the Safari Edit menu on the menu bar.
Can You Spell Check Yahoo Mail Messages?
Yahoo Mail doesn’t include a spell checker. However, web browsers like Firefox, Chrome, and Safari, have built-in spell checkers that check for errors as you type. When an error is found, the browser displays a red line beneath the problem word. To fix the spelling, right-click the word and choose the correct spelling from the suggestions offered by the browser. Because the method for setting up automatic spell checking is different for each web browser, follow the instructions for the browser you use with Yahoo Mail.