Please, do this feature as quick as possible. It's a shame that this ideia is here since 2019, almost 5 years and no response from the Team. Estou começando a me arrepender de ter assinado por um ano o Proton Ultimate.

I was really surprised when I found out that I cannot filter/search/select multiple labels at once. I've tagged mails with several labels to indicate their status and belonging and then I discover that I can't filter for them. I understand that search even for metadata in encrypted content can be difficult to implement but it's possible to filter for a single label so I assume that the metadata is available (maybe in encrypted form or at least on the client).

I was about to upgrade before I found out labels are so extremely limited in functionality, including this.

Critical search function. Without it, I may just have to go back to other email options.

It's been over 5 years since this request was created. Why this critical functionality hasn't been implemented?

- allow to search for messages with no label

Another vote for this feature. I migrated everything from Google to Proton and really miss this feature.

It would be great to be able to select multiple labels in the left sidebar.

Also, please allow us to save these customized searches for rapid searches in the future.

I love Proton, but it's crazy that this doesn't exist. It doesn't seem like it should even be that hard to implement.

the lack of being able to search (or filter) by multiple labels really eviscerates the value of labels. oye!

Just signed up for a paid family account, and began the import process... the lack of this ability is making it incredibly difficult to manage the transition.

Same thought as Jacob mentioned earlier here, I find it utterly shocking to have implemented only single label searches. Many systems share the same common point, labels are useful for "multi dimensional" filtering. Otherwise it seems like a folder, you've implemented this as if they were folders.
I'll give a meaningful example. An email can be related to 'support' being requested from your 'bank' support team. And another be related also to a 'support' to a 'social network' platform.
You're then forcing us to implement 2 labels: 'banking/support' and 'social media/support'
Not ideal to deduplicate and it can increase considerably the admin task to manage your emails.
And because of that, I can't switch to Proton and consider it as a production ready email platform.

I was shocked that you can only search on one label.

You built a label system why have it be gimped. What's the point of assigning multiple labels if I can't search by a combination of them?

It is also a critical part of the onboarding (import) stage to allow for properly manage issues that come up.

Absolutely critical, especially when a lot of power users are used to google.

See their search docs: https://support.google.com/mail/answer/7190

Even if you can't implement search syntax, at least try to keep up with functionality.

This is a must have. I'm finding it not possible to organize my email after migration.

Actually, looking a little more into the ideas, I cannot believe that this only has 163 votes. I would give it all mine if I could.

Why have labels if you cannot make search in several labels and/or folders? I often want to find my mails in one folder with one or more labels.

have seen this all over the place requested many times for many years. AND saw a message saying the API actually already supports it, so it is just a front end implementation.

As per all the comments below, labels are no more useful than folders without being able to use AND with them - otherwise there's point assigning multiple 'virtual folders' (ie labels) to them.

any chance we get a feature like this anytime soon?