Bulwark vs Kanmail

Bulwark is a self-hosted JMAP webmail client designed for Stalwart Mail Server. It provides a comprehensive suite of features, including mail, calendar, contacts, and file management, all in one intuitive interface. With Bulwark, users can efficiently manage their email, schedule appointments, and store files, making it an ideal solution for individuals and organizations seeking a secure and customizable webmail experience.

Kanmail is an open-source desktop email client that reframes your inbox as a kanban board: each column is a mailbox or folder, and you drag messages between columns to file, archive, or triage them. It runs locally on your own machine and connects straight to your existing accounts over IMAP/SMTP, including Gmail. Because it is a native desktop app rather than a hosted service, your mail stays between your computer and your mail provider, with no third-party inbox sync in between. It suits people who process a high volume of email and prefer a visual, drag-and-drop workflow to a traditional list view.

• Highly customizable and secure
• Supports JMAP protocol for efficient email synchronization
• Provides a unified interface for managing email, calendar, and contacts
• Self-hosted solution for increased control and flexibility

• Open source and installed locally, so mail is not routed through a third-party service
• Visual kanban layout makes a large inbox far easier to triage
• Connects to any standard IMAP/SMTP account, including Gmail
• Runs on Windows, macOS and Linux

• Limited scalability for very large organizations
• Requires technical expertise for setup and configuration
• May require additional resources for maintenance and updates

• Requires installing and configuring a desktop app — there is no browser version
• Single-user client with no built-in team or shared-inbox features
• Smaller project than mainstream mail clients, so fewer integrations and extras