Add-on: Proton Drive Backup for Home Assistant

luttappi · June 30, 2026, 8:53pm

Hey all,

I just released Home Assistant Proton Drive Backup, an add-on that automatically creates Home Assistant backups and keeps copies of them in Proton Drive.

It's a Proton Drive port of the excellent Home Assistant Google Drive Backup add-on by Stephen Beechen. The scheduling, retention, and generational backup logic is reused unchanged, only the storage backend has been replaced.

Proton recently released an official CLI for Proton Drive, and I wanted to use it to get my HA backups into an end-to-end encrypted drive instead of a regular cloud one. There wasn't an existing add-on for it, so I built one.

Repo + install instructions: GitHub - ashishdevasia/ha-proton-drive-backup: Home Assistant add-on for automatic backups to Proton Drive. · GitHub

Sir_Goodenough · July 1, 2026, 7:28am

In Home Assistant, go to Settings → Add-ons → Add-on Store.

This doesn't work in your install instructions.

luttappi · July 1, 2026, 8:29am

Bonjour, je ne parle pas français, j'utilise donc Google Traduction pour rédiger ce message. Veuillez m'excuser pour les éventuelles erreurs. Pour répondre à votre question, cette extension utilise l'interface en ligne de commande (CLI) récemment publiée de Proton Drive, qui, je crois, est également compatible avec les comptes gratuits. L'erreur s'affiche-t-elle sur le site web de Proton ou dans l'interface de l'extension elle-même ? Si elle apparaît dans l'extension, pourriez-vous fournir les journaux (logs) ?

luttappi · July 1, 2026, 8:52am

Hi, just wanted to check if you're pointing out that add-ons were renamed to apps or you're facing an issue while installing. If it's the former, thanks for pointing it out. I'll update the doc later in the day. If it's the latter, can you please describe the exact issue you're facing? Can you also provide details of your hardware? Happy to help.

gp-martin · July 1, 2026, 12:39pm

I have installed the add-on then I try to configure Proton drive by your connexion page then that open a page 'sign in to proton drive' then a button iopen proton sign in. Here I come to Proton Drive: Sign-in and when I fill my information, I get a error message than my email is not existing. Stopped there - you can answer in english, no problem

luttappi · July 1, 2026, 1:43pm

Can you please check if you're able to normally sign in to proton.me from your browser?

gp-martin · July 1, 2026, 7:34pm

in fact, I cannot, I made a mistake due to some recent changes... forget everything about my problem.

Mariusthvdb · July 1, 2026, 7:56pm

Nice! Thx for adding this.

Did you consider adding Proton as endpoint to core Ha Backup options.

That way we would t need a custom plugin and all would be supported in core.

Suppose checking one of the latter Pr’s doing that for Dropbox or OneDrive would be useful and could be repurposed for Proton drive

luttappi · July 1, 2026, 8:39pm

Thanks @Mariusthvdb, I'll look into it

benergizer · July 5, 2026, 5:24pm

Awesome! I was searching for this very specific solution you built here and AI told me that it became recently available and put this link. First thought it was hallucinating. Big ups!!

marcelgoe16 · July 26, 2026, 9:15pm

hi @luttappi
i have a problem in the initial sign in process. If i hit the sign in Button, no Sign in URL appears so i cant connect the addon with my proton drive account…Only this short error message is raising: The sign-in process exited before showing a link (exit -9). Is the keyring/secret service available? Do i have something other to do?
I already deleted my browser cache, trying another browser and restarted Homeassistant…

Could you please help me?

Thanks in advance!

luttappi · July 26, 2026, 9:44pm

Hi @marcelgoe16, can you please provide logs and some info about your hardware where you’re running home assistant? You can find logs in the logs section of the app. Thanks

marcelgoe16 · July 27, 2026, 3:06pm

Hi @luttappi, thanks for your fast response!

My homeassistant system runs on a proxmox vm without any docker stack or something else.

Installationsmethode: Home Assistant OS
Core2026.5.2
Supervisor2026.07.3
Operating System17.3
Frontend20260429.4
Companion-App2026.7.1 (2026.2346)

Please find attached my log:

e[32m07-27 17:00:17 INFO proton-drive: starting ‘filesystem info /my-files --json’ (timeout 180s)e[0m
e[32m07-27 17:00:30 INFO proton-drive: finished ‘filesystem info /my-files --json’ in 13.2s (exit -9, 0 bytes out, 0 bytes err)e[0m
e[33m07-27 17:00:30 WARNING Couldn’t verify Proton Drive authentication: (‘proton-drive exited -9: (no output)’, -9)e[0m
e[32m07-27 17:00:30 INFO Starting server on port 8099e[0m
e[32m07-27 17:00:30 INFO Server startede[0m
e[32m07-27 17:00:30 INFO Syncing Backupse[0m
e[32m07-27 17:00:30 INFO proton-drive: starting ‘filesystem info /my-files --json’ (timeout 180s)e[0m
e[32m07-27 17:00:42 INFO proton-drive: finished ‘filesystem info /my-files --json’ in 11.6s (exit -9, 0 bytes out, 0 bytes err)e[0m
e[33m07-27 17:00:42 WARNING Couldn’t verify Proton Drive authentication: (‘proton-drive exited -9: (no output)’, -9)

Thank you!

ms81 · July 28, 2026, 4:04pm

@luttappi Thanks, works very nice!

But, one question:

How to use subfolders? e.g. /my-files/Backups/Home Assistant Backups

luttappi · July 28, 2026, 4:34pm

Hi @marcelgoe16,

Thanks for the log. Exit -9 means the proton-drive process was killed by the operating system. The add-on didn’t stop it, and it produced no output at all. The most common reason for this is the system running out of memory.

Could you check two things:

Restart the add-on so the error happens again, then go to Settings → System → Logs, switch the source (dropdown, top right) to “Host”, and look for a line like Out of memory: Killed process ... from around that moment. Please paste what you find.
How much RAM is assigned to your Proxmox VM, and is ballooning enabled?

Thanks!

luttappi · July 28, 2026, 4:36pm

Hi @ms81 ,

Sub-folders are not supported yet. I will be adding the support in an upcoming version.

marcelgoe16 · July 28, 2026, 5:39pm

Hi @luttappi,
after starting the addon, the entries of the host protocol are jumping high.
And as you expected: I can find the following entry:
2026-07-28 17:25:15.545 homeassistant kernel: Out of memory: Killed process 373222 (proton-drive) total-vm:80887084kB, anon-rss:3293664kB, file-rss:48kB, shmem-rss:0kB, UID:0 pgtables:12452kB oom_score_adj:200

Balooning is active and i assigned 4 GB of RAM to the HASS VM.

The NUC has 16GB. I could double the RAM for HASS.

Thank you!

al52025 · August 27, 2026, 2:17pm

Hey thanks for this add on. Just switched to proton drive from google drive and this is exactly what I wanted. Everything worked for me although I noticed when first starting it it mentioned it was going to make a backup in like 10 minutes. I went right to settings and made my auto backups for 3AM. Not sure if this was supposed to automatically make a backup after started the add on

luttappi · August 28, 2026, 8:59pm

Hi @al52025,

Yes, that’s intended. When the add-on starts up and there aren’t any backups yet, it schedules one straight away. It just holds it back about 10 minutes so it isn’t creating a backup while Home Assistant is still booting (the same short delay applies right after you sign in to Proton). This is inherited from Home Assistant Google Drive Backup, which the add-on is a port of.

After that first backup, it follows your settings. So with 3 AM configured, the next one should land at 3 AM, then every days_between_backups days after that.

luttappi · August 30, 2026, 8:25pm

Hi @ms81, just added support for sub-folders in v0.2.0. Please try it out and let me know. Cheers