I think that this thread represent two separate requirements:
1) having a subfolder structure
2) allowing attachments

I really need a Folder and Subfloder structure to best arrange all my data.
A sub vault structure also would work; the idea is to be able to arrange the stored data in more than one level. For me this requirement is CRITICAL.

For the attachment, i see the need for it but I personally does not need it for the moment. It would consume even faster your space available on Proton servers

Please, we need folders and sub-folders to organize the logins in the Vault.

Proton Pass Import should import all the logins with the folder hierarchy.

We imported 1066 objects into Proton Pass; in the previous Password Manager, these objects were organized in the folder hierarchy.

In Proton, now all mixed up ☹

For example, we have multiple logins for the same website, which were organized in sub-folders based on the login type and role.

Now, in Proton Pass, we can’t distinguish between them; the only way is to check the username.

Not sure how Proton Pass auto-fill will work for these items, as all entries have the same website URL.

I feel this request is a bit a mix of 2 separated ones:
- one concerning correct import of folders/hierarchy from other pwd mngrs
- one concerning attachments of files to an item

I feel that if a bit or order can be made, this would be easier to tackle for Proton and more effective.

Regarding the file attachment missing feature, there's already a specific request: https://protonmail.uservoice.com/forums/953584-proton-pass/suggestions/46854553-support-tiny-file-attachments

That is what I'd like to request specifically, personally.
Not being able to attach files directly to the items (e.g. 2FA recovery codes image, text files with backup encryption recovery key), maybe through a ProtonDrive integration, that would be super, is what's keeping me now from switching over from KeePass.

"attachments with built in viewer" Proton will never add it in your lifetime...
A password manager is not for that kind of use... Get Anytype for that instead.
This is not a bookmark nor a pdf manager, you use the wrong tool.

But simple attachments and sub-folders, yes, really needed, I think they must be added in 2047, maybe later... Because it's the Sloweeessstttt company ever...

Definitely needs attachment feature. Example: Drivers License entry might include a .png attachment of the actual front/back of license card.

Nice idea, it’s a kind of bookmark manager then….

I imported from Bitwarden also. Like others, none of my vaults imported separately, just all 300+ the logins into one vault. I created some additional vaults in Proton Pass to match my current Bitwarden vault names, and, one by one, moved logins to each new vault. After tediously doing so, I was then unable to sort the logins alphabetically in the new vault. Very frustrating.

I was impressed until I tried importing from BitWarden and saw all my logins dumped in one mess.

Having my existing folder structure would provide a seamless migration.

I'm new to having multiple vaults, so being able to select folders that become their own vaults would be a great way to start using this feature.

Either add folders or subvaults. When managing various physical or logical sites for a single organization in a professional setting it's convenient for each site to have its secure information grouped together, followed by all sites grouped under an umbrella vault for the organization (which also has its own entries for organization-wide secured info).

Given that the ability to share vaults is on the roadmap, having multiple levels of subvaults would be ideal — allowing for a subvault and any subvaults it contains, recursively, to be shared with a relevant manager.

And add a plus one for me on the addition of tags.

Using Bitwarden for some years, folders sorting is a critical feature for this app (after a desktop app idea). Adding little attachments is also useful.

Folders and Tags please. To be able to look at a tag (across folders or in a folder) and to search a keyword in a folder or a tag.

Yes this is a huge thing for me. Vaults are too big. I have a vault for personal, one for my website, one for work, one for education... But I really need organization within them. For example, categories in my website vault for email, hosting, and social media, or categories in my personal vault for finances, food, travel, shopping, media, etc.

Folders, definitely, or at least tags, like in P'mail. All the major pass managers have this feature included with no limit for paid subscribers. For Proton to limit to 20 "vaults" (folders) for paid plans is a step backward.

I fully support the idea of folders