There is a time and place for autocorrect and spell check, but context is everything with this human proofreading service. This chrome extension costs you $5 a month to get an actual person to read over your emails to check for and correct spelling errors before you send them.
eAngel is free from the Chrome web store. Once downloaded, you'll see an option to 'Send with eAngel' beside the regular send button in Gmail. If you click it, you will be redirected to the eAngel team. Their proofreading service extends to fixing misspelled words (typos), rewording awkward phrasing (great for those whose native tongue is not English) and enhancing professional tone. In fact, the service is available not just in English, but French, German, Hebrew and Spanish.