If you want an email assistant that's trained to understand your writing style and voice, Ellie is worth a look. Ellie is an AI email assistant that uses your past emails as training data to craft responses based on context. It's got features like multilingual support, role assignment and extra context options, which makes it good for high-volume email and for overcoming reply anxiety. Ellie is available as a browser extension for Chrome and Firefox and works with Gmail and Fastmail, though it'll expand to other email clients.
Last is MailMaestro for crafting high-quality emails quickly in your own voice and tone. It's got personalization, enterprise-level security, translation and summarization of email threads. MailMaestro works with Outlook and Gmail and is available for Windows, Mac and web versions. The tool's focus on security and productivity features makes it a good choice for individuals and businesses that want to get more out of their email.