Ready to Send is a good option, offering AI-powered email reply generation for Gmail. It composes human-sounding, contextually appropriate responses in your own voice and style, and it works on all devices, including native Gmail apps and third-party email clients. It also supports more than 100 languages, so it's good for professionals and businesses.
Another option is Ellie, an AI-powered email assistant that learns your writing style and composes replies based on the context of the email thread. Ellie's multilingual support and integration as a browser extension for Chrome and Firefox make it a flexible option for handling email responses. It's good for people who handle a lot of email and for those who suffer from reply anxiety or who aren't fluent in the language of the emails they're handling.
Last is Flowrite, which integrates with popular email and messaging services to compose original, high-quality messages. It's got a library of templates for common messages, and it can read context to suggest replies, too, so you can save time and get work done. It's good for people who send lots of messages, like executives, customer support agents and others.