In Mac OS X Mail, how can I turn spell checking off or on?

Mac OS X Mail has an option to automatically check your spelling as you type. Mail will then underline any words that it finds to be misspelled with a red dotted line. To turn this function off or on, follow the steps below:

1. From the Mail menu, select Preferences... . In the window that opens, click Composing.
   
   
2. Check the box next to Check spelling as I type to turn spell checking on; to disable spell checking, uncheck the box.
   
   
3. Close the preferences window by clicking the red button in the upper left corner of the window.

Alternatively, from the Edit menu, select Spelling and then Check Spelling as You Type to toggle spell checking off or on. If automatic spell checking was on, this will turn it off; if it was off, this will turn it on.

If you have automatic spell checking disabled, you can still have Mail spell check a message for you. To check the spelling of a single word as you are composing a message, highlight the word, then from the Edit menu, select Spelling, then Check Spelling. To spell check an entire message, from the Edit menu, select Spelling, then Spelling... . In the window that opens, you can choose to ignore or correct the spelling mistakes Mail finds in your message.

Also see:

• In Mac OS X Mail at IU, why does my account not show my Inbox mail listings?
• In Mac OS X Mail, how do I set up incoming mail filters?
• In Mac OS X Mail, how do I remove an account?