It's a 'must have' for me for migration from non-EU storages.

This is absolutely essential. Rclone is the defacto tool for moving files between cloud providers, so being able to use it to migrate to / from proton drive, or for syncing different sources of data into proton drive is absolutely key.

Rclone also needs to have access to all of the 'special' folders, not just My Files. That means access to 'Computers' and 'Photos' as well (honestly these should ALL be accessible via 'My Files' rather than separate magic stuff.

I know you're struggling to find Linux developers, so maybe the solution to the Linux Client thing is to work with the RClone developers (who currently have a proton drive beta that works really well except for not being able to deal with Photos / Computer backups) to get rclone absolutely solid.

Would allow using Proton Drive from GNU/Linux platfoms.

Essential to fully use the potential of Proton Drive!

Support for rclone is a must. At the moment I run into a rate limiting issue from time to time. I'm currently working with something like this:

/usr/bin/rclone sync SOURCE RCLONE-DEST --modify-window 1s --fast-list --protondrive-replace-existing-draft=true --tpslimit 4 --multi-thread-streams 1 --checkers 8

EDIT 2024-12-15:
/usr/bin/rclone sync SOURCE RCLONE-DEST --modify-window 1s --fast-list --delete-before --protondrive-replace-existing-draft=true --tpslimit 4 --multi-thread-streams 1 --checkers 1

I guess --checkers 1 was the key (but at the moment working with --checkers 4 too) and I added --delete-before. Using --delete-before will prevent rclone from aborting deletions in destination if errors occured. This is why my backup grew bigger and bigger.

2025-01-03: If it is of any use to anyone, here are the relevant excerpts from my e-mail correspondence with Proton Support:

"Please note that Rclone does not implement local state caching and synchronization, which causes it to make large amounts of calls. Reducing the frequency at which you run Rclone and the size of the folders they are synchronizing may help."

"Additionally, note that we are not actively blocking Rclone. Due to how Rclone is designed and syncs files, it is triggering anti-abuse mechanisms on our end designed to assure fair use and balance the load on our infrastructure.

We would also like to mention that we do not have a syncing client for Linux. It is on our roadmap to create a sync solution for Linux users, but we do not have an ETA on when this might be available. We will consider your request as a vote towards prioritizing such a solution as well as one towards a public API."

What works at the moment without triggering rate limiting is this (but its very slow):
--delete-before --modify-window 1s --protondrive-replace-existing-draft=true --fast-list --checkers 3

This is really frustrating.

I only use Linux. I need access to my Proton Drive.
Currently rclone v1.68.1 is working as a temporary work-around.
https://rclone.org/protondrive/

I currently am a paid user, I use rclone to backup my crypted pictures for my family, in this era of AI I don't trust any cloud. It kind of works but I would love to have no API limits or very high API limits for linux users.
If you don't wanna support rclone than get out a linux app

Why does proton hate Linux users? Rate Limiting API calls? Why are they making Proton Ham, cheese but not a basic Linux client

Seems Rclone is currently on Proton's shitlist... Pretty disappointing. No official client by Proton for us Linux users is bad, but not even allowing solutions provided by the community is just a **** shame.
https://github.com/rclone/rclone/issues/7864

Just tried out rclone protondrive backend, got stopped by abuse detection. Anyway, this would require an app token similar to what's in place for smtp submission for protonmail.

Linux users need a secure way to sync files.

This would be an *enormous* value-add. It would render all other cloud storage platforms in my personal workflow redundant. My most anticipated feature if Proton gets on board with it.

As a Linux user I need a secure way to backup files to Proton Drive. I would prefer to use a tried and trusted tool with encryption support such as rclone or borg.

I regularly use rclone on my Google Drive it is an incredible app which would boost the capabilities of Proton Drive a lot.

This is critical, I want to use upgrade my account and use proton for mail / drive / vpn but cannot at the moment because there is no way for me to sync my files (primary OS is Linux).
Giving limited support to the RClone open source developers seems a no brainer; it is popular, cross-platform and robust. At the moment it looks like they are trying to sort bugs (example below) caused by essentially having to reverse engineer the proton drive API:
https://github.com/henrybear327/Proton-API-Bridge/issues/3

In few words, an secure API will be great to upload files over CLI on Linux / Unix using RCLONE

I am a Proton Unlimited ProtonDrive user.
I currently use rclone for Linux on Google Drive and it automagically works syncing my files from desktop to cloud. Please add rclone support in the next release. Very important for offsite storage.

this feature would be useful. I used to do backup of my documents with rclone. Thank you.

As a Visionary user (this email address is attached to my Proton account), I want this feature as well.

Although I have access to remote desktops with high network speeds, I want to automate the collection of some data for a project of mine so that 3TB of storage actually gets put to work.

Agree. To execute things "manually", using a GUI app or the web interface is not always a solution. Should be supported also the CLI way and scripting, wich can be more effective, simple and fast.