I agree that a Trello-style project board could fit nicely into the Proton ecosystem. Simple Kanban boards with tasks, due dates, labels, and collaboration would pair especially well with Proton Calendar.

It would be even more useful if cards could connect directly to calendar events and reminders while keeping the same privacy-focused approach as the other Proton services. A lightweight solution would probably be enough for many users without trying to become a full project-management platform. https://monkeymart.com.br/ is unrelated, but the idea of keeping everything connected within Proton makes a lot of sense.

A Trello-style project management tool integrated with calendars and other productivity apps would definitely make workflows more efficient. Having everything connected in one secure ecosystem is a great idea for teams.
In a similar way, businesses that manage vehicles or transport operations benefit from keeping compliance and fleet management connected. Obtaining a https://althurayauae.com/rakway-certificate/ helps ensure vehicles meet the required standards, while integrating compliance with fleet tracking and maintenance records simplifies operations, improves efficiency, and helps organisations stay compliant with regulatory requirements.

This is quite a large request, so if positieve it will take time.
I tend to work a lot with Trello (a scrum/agile board application), and this is awesome and helps me structuring my work and projects.
When I considered Nextcloud, I learned they integrated "deck" which is similiar. a bit simpler, but verry well integrated into the nextcloud environment. So you could use attachments in mails straight into cards on the Deck Scrum Board, and deadlines on task-cards came into my calenders, and I really experienced the added value of that.

So, can Proton also consider adding a new proton app , similar to Deck and with an equal level of integration in the other Proton apps.

Kind regards
Marcel Collignon

This!

The main problem of https://trello.com/pricing is that it is not end-to-end encrypted. The best end-to-end encrypted alternative is https://www.stackfield.com/pricing

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Trello is a simple, visual project management tool that helps you organize work and keep track of what’s going on—whether that’s a team project or your own to-do list.

Think of it like a digital bulletin board:

- Boards = big projects (e.g., “Website Redesign”)
- Lists = stages or categories (e.g., “To Do,” “In Progress,” “Done”)
- Cards = individual tasks (e.g., “Write homepage copy”)

You move cards across lists as work progresses, which makes it really easy to see status at a glance.

What you can do with cards:
- Add descriptions, checklists, due dates, and attachments
- Assign people to tasks
- Leave comments and updates
- Label things by priority or type

Why people like Trello:
- Very intuitive (minimal learning curve)
- Flexible—works for work projects, school, event planning, or personal life
- Good for collaboration, but also great solo

Common uses:
- Team project tracking
- Content calendars
- Product roadmaps
- Personal task management

It’s web-based and also has mobile apps, so you can use it anywhere.