Email, Messaging, & Video Calls > Email 147 147 people found this article helpful How to Change the Spell Check Language in MacOS Mail Specify your primary language for use on your Mac By Heinz Tschabitscher Heinz Tschabitscher Writer University of Vienna A former freelance contributor who has reviewed hundreds of email programs and services since 1997. lifewire's editorial guidelines Updated on January 27, 2021 Email Yahoo! Mail Gmail Trending Videos Close this video player What to Know On your Mac, go to the Apple menu and select System Preferences > Language & Region. Under Preferred Languages, click the plus sign.Highlight a language and click Add. A pop-up asks you to specify a primary language from your preferred languages.Click Keyboard Preferences > Text and check Correct spelling automatically. Select Automatic by Language and choose a variation. This article explains how to specify a primary language for your macOS Mail app's spell checker. Select one or more languages for the spell checker to check, and choose variations for certain languages. Instructions in this article apply to macOS 10.12 and later. Change the MacOS Mail Spell Checker Language To pick the languages and dictionaries used to check the spelling in the emails you write using your Mac: Open System Preferences on your Mac under the Apple menu. Select the Language & Region category. Click the plus sign under the Preferred Languages section. Highlight a language and click Add. Pay attention to language variants; Australian English is not the same as U.S. English, for example. A pop-up asks you to clarify which of the languages in the Preferred Languages section is the one you want to use as your primary language. If you change the primary language, you'll need to restart your computer before it is recognized. System Preferences may ask if you want to add any keyboards based on the language you just added. Select any additional languages you want to add to the Preferred Languages section. To remove a language, highlight it and click the minus sign. Drag and drop the languages in the Preferred languages screen to change their order. The first one in the list is designated as your primary language. However, Mac OS X can often pick the correct language for your mail from the text you type. Click the Keyboard Preferences button at the bottom of the Language & Region preferences screen. Select the Text tab. Place a checkmark in front of Correct spelling automatically. Select Automatic by Language from the Spelling drop-down menu to allow the Mac to choose the language to use. To specify the language the Mac should use, select it from the drop-down menu. Close the Language & Region system preferences window to save the changes. Was this page helpful? Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit