Zoho Mail has an inbuilt enhanced
Spell checker to correct your spelling and grammar errors on the go. After composing your email, click the Spell check icon. The misspelt words or grammar errors in your email content will be highlighted. Simply click the highlighted words to see a list of possible words with the nearest correct spelling or alternative words. You can also add a word to your custom Dictionary by clicking the
Add to dictionary icon so that it doesn't get flagged the next time you spell-check an email.