Clicking the [spellcheck] button opens your message in a special spellcheck page, where all spelling mistakes are highlighted. To correct your spelling, select the correct spelling from each dropbox in the window and then click the [Accept Spelling] button. You will return to your message.

NOTE: If something happens to your internet connection, or if there is a page fault... Whatever the problem, don't worry. When you click the [spellcheck] button, your message is automatically saved in your drafts folder. When you return to your account, just open your message from the drafts folder and continue working.