The Concept: Visual Structure for Complex Workflows
While a traditional list view is perfect for quick replies, it fails to provide the structural overview required for multi-stage professional processes. I am proposing a native Kanban Board View that allows users to transform any folder, label or scenario into a visual pipeline.

The "Why": Managing the Fragmented Inbox
Even when using dedicated professional platforms (such as Indeed for hiring, Jira for dev-ops, or a CRM for sales) the final mile of communication always lands in the Inbox.
Currently, these "notification-heavy" processes lead to a cluttered list where it is difficult to see the email status of a specific thread at a glance. Instead of clicking through dozens of emails to remember where a candidate or a project stands, a Kanban Board View provides immediate spatial organization. This isn't about replacing specialized platforms; it’s about providing a superior way to manage the communication generated by them.

The Proposed Structure: "The Action Pipeline"
Instead of "To-Do," the default columns should reflect the status of a communication lifecycle:
• Incoming / Triage: The default landing zone for new, unclassified mail.
• Active / In-Progress: Emails requiring research, drafting, or internal coordination.
• Awaiting Response: A dedicated column for "the ball is in their court," preventing threads from being buried.
• Follow-up Required: High-priority items that need a second touchpoint.
• Completed / Closed: Successfully resolved threads.
• Custom Columns: Users should be able to create, rename, and reorder columns to match their specific needs (e.g., a "Hiring" board with columns: Applied, Screened, Rejected, Interviewing, Offered).
• Folder/Label Integration: Each column should ideally map to an existing Folder or Label. Dragging a card to a new column automatically updates the email's label or moves it to the corresponding folder.

Automated "End-of-Life" Actions
A critical component of this feature is defining what happens when an email reaches the final column (e.g., Completed / Closed). The board should offer configurable "Exit Actions":
1. Auto-Archive: Automatically move the email to the Archive to keep the board clean.
2. Mark as Read: Ensure the thread no longer triggers notification counts.
3. Delete/Trash: For ephemeral workflows like temporary inquiries.
4. Stay in Place: Keep the card visible for record-keeping until manually cleared.
5. Other

How it Works (The MVP Approach)
1. Toggle-able View: Users can switch between "List View" and "Board View" for any specific folder, label or section.
2. Manual & Automated Assignment: Emails stay in a "No-Board" or "Inbox" state by default. Users can manually drag-and-drop a thread into a column, or set up Sieve filters to automatically route specific senders (e.g., no-reply@indeed.com) to a specific board column.
3. No External Dependencies: This remains a native, integrated feature of Proton Mail, ensuring a seamless and fast user experience without third-party management.

Why this is essential for Professionals:
Whether it is a recruitment drive, a procurement cycle with multiple vendors, or managing client inquiries, a Kanban structure allows for a "birds-eye view" of a professional’s workload. It turns the inbox from a simple message repository into a structured management tool.