I don't know about nested labels but nested folders (i.e., folders + sub-folders) now exist. They've been live in the beta version of Protonmail since October 2020. I'm guessing they'll be part of the feature set when the beta moves to GA release.

sub-folders, where are they?!?

Adding my 3 votes to this. If possible, implement this soon.

Labels themselves are also indispensable when a more complex control of e-mails is needed (using just folders is not enough) as they bring another dimension into mail organization.

And when using a lot of labels, nested labels are crucial.

This is the CLEAR and most important feature to add for many of us to go ALL IN!

This feature for nested/hierarchical labels is the only one that is keeping me from making the complete switch and go for a paid plan.

I cant believe that ProtonMail doesn't have this feature! We need nested labels, or even better nested folders, so we as users can organize thousands of E-Mails we have.

It is 2020 now and ProtonMail users have been requesting the feature of making sub-folders (nested folders) for 3 years now. I am a software developer so I know that to implement this feature is not difficult! Sub-foldrs help us organize E-Mail and solve the clutter. This feature is very important for businesses and is a real deal breaker.

WE WANT NESTED FOLDERS AKA. SUB-FOLDERS!

WE WANT NESTED LABELS!

Yes - please add sub-labels. I personally favor labels over folders since I believe they are more flexible. I trying to migrate from Gmail where I have several nested layers of labels. Trying to keep that way of organizing will be very difficult - basically I'll have to prepend all the higher level labels text to all of my corresponding lowest level labels.

An absolute must for organizing labels, please add.

Well, this basic function has been claimed for a very long time... why isn't it yet implemented ?

Any news on this one ? I've so much labels that it becomes hardly navigable in the GUI.
Moreover, I would like to see upper labels of a nested label automatically attached to an email, so that I don't have to manually attach all them.

I agree. Also I need to have this function.

Ability to nest folders within folders and nest labels within folders would be so much easier to navigate and would help shorted an out of control folder tree.

I really like ProtonMail, but I must say, I expected this feature to be included, at least in the paid accounts. I hope it will be soon :) As someone else said, just one level would be a great improvement!

Outlook has this feature and that works really well. I need nested labels. PLEASE!!

Any update?

I wish I could give this some votes, but I'm out of them. Anyway, sub-folders would be extremely useful for those of us who like to organize their inbox (like me). You could have a folder called, for example, "News" and have sub-folders "Slashdot," "NY Times," etc.

$ tree News
News
├── NY Times
│   └── New York Stuff
└── Slashdot
└── Microsoft Finally Makes Something That Doesn't Suck: The All New MS-500 Feeble-Suck Vacuum Cleaner

2 directories, 2 files

:P

Yes, without the ability to create subfolders I simply can't switch to Protonmail. Even just one more level would be fine for me..

- Folder 1
-- Subfolder 1

This is currently the main things stopping me from switching properly and getting a paid plan.

+1 for me on nested folders please.

Another +3 for sub folders. Sub labels aren't needed in my opinion (they can work perfectly like tags) but the folder structure needs nesting to be useful otherwise a box just becomes a mess of folders. eg Orders - Amazon, Orders - Ebay, Orders - etc etc.

+1 from me too