Heyday is an AI-based system that processes documents, notes and conversations into insights and a searchable database. It's good for summarizing emails, phone calls and even suggesting new material. With features like automated meeting notes, a writing assistant and tight app integration, Heyday can help you get a lot more done, and it's well suited to people who have to process a lot of information.
Another good option is SimpleMail, which is geared specifically to AI-powered email composition and summarization. It includes features like Compose for generating emails from bullet points, Summarize to shorten long emails, and AI Reply for drafting a response. It's available as a free Chrome extension for Gmail, and its job is to free up your time by automating some email chores.
For a full-featured customer support system, Help Scout is a powerful option. It automates some routine work and summarizes email threads with lots of back and forth into bullet-point action items. Its AI Drafts and AI Summarize tools let support teams quickly respond to customers, speeding up response times and lowering resolution time.