I want to share notes / vaults with someone else. I currently use iOS but I'm soon switching to Android and I have a PC with Linux/Windows dual boot and I'm interested in hearing what are your approaches for syncing vaults. I have an ultimate Proton account, any advice for sharing notes with more people and having them synced in multiple platforms?
Exporting the .md file. I also think that for fellow Obsidian users, the bits that have functionality in Obsidian that don't in Markdown in general might come through if they open the file in Obsidian, though I'm not 100% sure.
I know there is probably a plugin for this, as well as the official Obsidian Sync.
Edit: sorry, I've realised after writing this that I misread and the post was about hosting for sharing, not for backup and sharing between your own devices. I'll leave my comment up in case it's interesting anyway, but I wrote it thinking this was about having your vault synced across devices.
I've used a few things for both Logseq and Obsidian, Google Drive with the desktop app and FolderSync for android was the second best I've tried.
The best I've tried is Obsidian sync, so the few quid are worth it for me as it saves me a lot of hassle and I would say Obsidian is one of my top 3 used apps.
Maybe take a look at the Remotely Save plugin for Obsidian. It works with lots of services (though not sure about Proton). The “Pro” version is still in beta and free.