Was looking into syncing additional docs to proton drive and ran into this exact issue.

A few other commenters noted nas syncs and it looks like someone made post specifically requesting that as well.

https://protonmail.uservoice.com/forums/932839-proton-drive/suggestions/48439454-synology-nas-cloud-sync

There have been several requests for the ability to set proton drive as the default location for libreoffice documents - much like the Office suite defaults to onedrive. The explanation for why we cannot have this is the encryption requirements for proton drive - fair enough - but Proton Mail Bridge provides a "bridge" service that permits local mail clients to interact with proton mail services. Could not this same be done for office applications? You could rebrand the Mail Bridge simply as "Bridge" and add functionality that would also allow us to set our office applications to default to the bridge and let it handle the data encryption and transit functions to the drive? Not sure if this request should be in the Mail section or Drive section but I put it here.

I currently use this feature to store critical information. Having to subscribe to another provider for this is an added cost. I hope proton adds this feature.

I pretty much can't use Proton Drive without webDav. It's okay, I mostly use Proton for email. But it would still be nice to be able to use the Drive too!

I am considering purchasing the unlimited version but I can't make use of it without WebDAV

O suporte WebDav é essencial! Como assim não suporta?

hello,
webdav is required to use cryptomator.

Necessary for use in conjunction with various other products, e.g. DevonThink, Cryptomator, NAS Connection, etc.

Instead of multiple apps all connecting Proton to Local, we can have Proton Mail Bridge turned into Proton Bridge.

Contacts, Calendar and Drive could be different tabs in Proton Bridge. We have open protocols for each of them, CardDAV, CalDAV and WebDAV respectively.

Ik wil Proton drive pas indien het mogelijk is om geautomatiseerde backups van mijn websites via WebDav (of andere wijze) op te kunnen slaan.

Another vote for WebDav for DevonThink!

Would be great to be able to sync Zotero and Obsidian!

Would love to move my DEVONthink sync store to Proton Drive. Need Weddav support to do that.

I think this could leverage this idea https://protonmail.uservoice.com/forums/932839-proton-drive/suggestions/47684330-sync-with-qnap-nas if WebDAV was implemented it would automatically enable NAS systems to backup Proton Drive. Please do!

I am a paid proton user. I would like to see this. I came here looking for a solution to sync Joplin after it appears my usual cloud service, pCloud has issues with it.

As below, important also for using e.g. GoodNotes on more than one device

J'ai besoin de la fonction webdav pour héberger les données de différentes applis, comme Joplin par exemple.
Merci

I HAD started moving everything over to proton but haven't been able to complete the move thanks to not having this

I'm really hoping it's coming soon despite how long ago this idea was posted? It feels like such an essential feature for a product that's supposed to be the best secure google alternative, but if not I'll need to downgrade or just move elsewhere

Just wanna add to what's already been said:
This would be an important feature! My Obsidian vault needs a new and secure home.

If not Webdav, possibly an api or command line tool to make it easier to sync between different platforms.