Godwit

Key facts: Godwit is an open-source email client for macOS, Windows and Linux that connects to any IMAP/SMTP account. Its assistant, Wit, answers questions about your mail, reads attachments and drafts replies, and you choose the model, including local models. Wit never sends without your approval, and the client is extensible through skills, plugins and MCP, and can even expose mail and draft tools to other agents.

Plans: Free, open source under Apache 2.0, in early preview. There is no paid plan listed on its site.

Best for: People who want AI help with email without handing their inbox to a cloud service. Who should skip it: anyone who wants a polished, finished product with support.

Pros

• Works with any IMAP/SMTP account on macOS, Windows and Linux
• You choose the model, including local models, so mail need not go to a cloud AI
• Wit never sends without your approval
• Free and open source, extensible through skills, plugins and MCP

Watch out for

• Early preview, so expect rough edges and missing polish
• No hosted support team behind it: community and docs are your help desk
• Setting up your own model takes more effort than a one-click cloud client

Best for

People who want AI help with email without handing their inbox to a cloud service. Who should skip it: anyone who wants a polished, finished product with support, or a Gmail-only user who never leaves the browser.

Pricing

Free, open source under Apache 2.0, in early preview. No paid plan listed.

FAQs

Which email accounts does Godwit support? Any IMAP/SMTP account, on macOS, Windows and Linux.

Does Wit send mail by itself? No, Wit never sends without your approval.

Can I use a local model? Yes, you choose the model, including local models.

Is Godwit free? Yes, free and open source under Apache 2.0.