MailFast is an AI-powered email writing assistant designed to help professionals compose professional, engaging emails quickly. It offers instant email generation from brief prompts, smart tone adjustment, grammar and clarity checks, smart templates, AI personalization, and multilingual support in over 50 languages. Trusted by 50,000+ professionals, MailFast saves an average of 5 minutes per email and has written over 10 million emails. It integrates with popular email clients and offers a free plan with 20 AI-generated emails per month.