GhostWrite is an email writing assistant that utilizes ChatGPT and other AI technologies to automate the writing process. It works with Outlook and Gmail, allowing users to reply, compose, and write emails instantly from just a few words. With GhostWrite, users can generate full-length emails from short phrases or bullets, write professional sounding emails in their own tone, automatically correct grammar and spelling, save and re-use AI-generated email templates, and draft full-length replies with just one click. GhostWrite supports Microsoft Outlook, Gmail, and more.