HelperBat is an AI-powered scheduling assistant that coordinates meetings through email. Simply CC your personal assistant on any email thread, and it handles everything — proposing available times, managing back-and-forth replies, sending calendar invites, and following up with participants. It gives you a booking page and poll functionality too, and the AI assistant can make the polls for you. Priced to be the most affordable AI scheduling assistant on the planet.

FixThisEmail.com is a powerful and free AI assistant that acts as a simple email bot. Send any email text to Help@FixThisEmail.com and the bot will respond with a suggested revision of your email in the style you specified in the subject line.

RecomBuilder.com is a free tool that uses the GPT-3 AI to help write the first draft of a recommendation letter or reference letter for any purpose. It provides useful prompts that get the AI to generate a well-structured letter that covers key points.