bytemail is a native email client for macOS and iOS that connects directly to mail servers with local AI assistance via MCP.
What the product does and how it is positioned
bytemail is a native desktop and mobile email application built with Swift, SwiftUI, and AppKit for Apple platforms. It unifies email management across Gmail, iCloud, Outlook, Microsoft 365, Yahoo, Fastmail, and generic IMAP providers into a single interface offering both conversation-style bubble threads and traditional list layouts.
The application operates on a local-first privacy model that eliminates proprietary relay servers. Account credentials reside in the macOS Keychain, and search indexing and rules processing take place on-device. It incorporates an integrated Model Context Protocol server, enabling external AI clients to interact with email content locally under explicit user confirmation.
Source-supported ways to use the product
Consolidate personal, work, and studio mailboxes from various providers into a unified view with distinct color badges and folder rules.
Connect desktop AI assistants through the local MCP server to find historical messages, draft responses, and summarize action items.
Inspect incoming correspondence without exposing tracking pixels, loading external graphics, or leaving link-tracking identifiers intact.
bytemail includes a built-in Model Context Protocol server that runs entirely on the local Mac. This interface allows users to integrate external artificial intelligence tools, such as Claude, Claude Code, Codex, Cursor, or LM Studio, directly with their synchronized inboxes.
Through plain-language instructions within connected AI tools, users can query multi-account message histories, generate draft replies, and organize mailboxes. The integration enforces local safety boundaries: external connections remain disabled until manually enabled for selected accounts, and all automated draft dispatches require explicit user approval within the bytemail application before sending.
Checks to run with your own material and workflow
What was checked and when
Answers based on the source-checked product record
bytemail supports Gmail, iCloud, Outlook, Microsoft 365, Yahoo, Fastmail, and any standard IMAP email server.
No. The application connects directly between your device and your email provider. Passwords and OAuth tokens are stored in the macOS Keychain, and message data is never stored on bytemail servers.
bytemail requires a Mac with Apple silicon running macOS 14 or later. Advanced features such as summaries and text rewriting require Apple Intelligence on macOS 26.
While connected AI applications can search, summarize, and draft replies, no message can be sent automatically. Every outbound dispatch requires direct confirmation from the user inside bytemail.
The app removes email tracking pixels, cleans tracking parameters from URLs, blocks external images until approved, and warns users when detecting look-alike domains or deceptive links.
