Front offers spell check in various languages that you can switch between.
Highlight a word in your composed email.
Right-click the highlighted word.
Hover over Languages to expand the list of supported languages.
Choose a language.
If you have a language selected, spell check will underline the misspelled word, but not change it automatically. Right click the misspelled word to choose the corrected word.
Note: On some Windows machines, you may need to add a language to your dictionary. To do this, go into your computer Settings and select Region & Languages.