If you're looking for a SimpleMail alternative, Warmest is another top option. It uses ChatGPT to compose custom responses to incoming emails, so your replies are in your voice and take into account the conversation's context. It also has calendar integration, summary generation with action items, and keyboard shortcuts, and promises to free up about 5 hours a week.
Another top contender is WriteMail.ai, which helps you write emails faster with real-time suggestions for clarity, concision, tone and structure. It works in multiple languages and has AI editing for grammar and spelling, so it's good for personal and work emails. The tool has different pricing tiers for different needs.
If you want an assistant that learns your writing style and composes responses based on the email context, Ellie is a good option. It's available as a browser extension for Chrome and Firefox and supports Gmail and Fastmail, with plans to support other email clients. Ellie's personalized learning and multilingual support make it a good option for people who have to handle a lot of email.
Last, Superhuman uses AI to write emails and has other features like a split inbox, follow-up reminders and a read status tracker. It works with both Gmail and Outlook, and teams can use it to collaborate and respond to emails more quickly. It's geared for high-performing teams and individuals who want to get the most out of their email.