I really really need this. It seems kind of insane to not have this out of the gate, it is such a basic thing.

I am pleased to hear that nested folders are currently in a beta version of ProtonMail. I look forward to their implementation in production ProtonMail at the earliest possible date.

Nested folders needed for free accounts.

Nested folders are currently in beta version 4.1.1!

New user here, would really love nested folders. Organization is so much easier with them. Please consider adding!

I've given up on nested folders and everything else.

protonmail don't apparently look in their suggestion box.

Ok. So nested folders STILL are not there.

Just so sad.

Currently migrating a life's worth of email into protonmail professional (paid) account, only to discover that nested folders aren't possible. Everything else is so perfect and meets 100% of my needs, and I'm committed to the move at this point. The lack of nested folders is killing me.

Wow, just realized that this simple feature hasn't been implemented since it's first requests in 2018..
I recently subscribed, and I was surprised to see that nested folders doesn't exists, which is quite annoying for the mail's organisation..

Very disappointed to find out ProtonMail doesn't support this. Would love to see some emphasis on User Experience in your applications.

Chiming in to also voice my anticipation for this feature.
Any updates or ETA on this?

I'd like to see an explanation of why this "feature" should be so difficult to implement. I can't believe that adding a few tags to an email has any security implications.

This is such an important feature.
It would be very helpful to post an ETA or have something more than "started".
I am going to try contacting support directly.

This is such an important feature.
It would be very helpful to post an ETA or have something more than "started".

I sure would like to be able to use sub folders, hopefully soon.

Can we get a progress report? I'd love to see this implemented in the web and mobile UIs. I know the back end supports it, but it's still a bummer to not be able to see this when I'm on the go.

This is pretty much the only thing holding me back from switching to Proton as my main email

This is the ONLY thing keeping me from bringing all my email usage to ProtonMail. We have to be able to use sub folders and folders of folders. Colors and labels are ok for a small amount of email but sub folders, at least even ONE LEVEL of subfolders are essential for this to be the BEST there is.

Can we have a progress report from admin and a likely deployment date for this essential feature?
I'm using loads of disorganised labels!

This cannot be a difficult programming assignment. Why the delay? This feature is fundamental to useful email.