For ecologic reasons, it seems critical to me tha users get used to delete not relevant informations instead of just archive.
All appointment related email shall be applied an expiration date for example, through a selected date when reading the email, or via labels as some people have proposed before. But it would exclude the ones who use protonmail freely and are the ones who need the most to tidy the inbox.
I thought about a selectbox with 1 month, 3 months, 6 months, custom date proposal. And maybe enlarge filters to help select date related mails.
Filter mails by "has an attachment" may help to clean-up too

This is possible in gmail and in outlook. by folder or by sender or other condition. It is extremely helpful, I'm surprised it hasn't been implemented yet?

I think this is a very important feature. I already use it for personal folders on my corporate account. On Proton I would like to use in my 'LinkedIn' folder, in order to auto-delete them after one month or something like that.

Especially in trash and spam, it would be nice if there were options for say 60 or 90 days or even a custom number.

I need this on sent email as I am using a protonmail account for automatic mail sent by a self hosted gitlab instance

Microsoft 365 is providing the function

As me many users need this option. Can you please implement that before the end of the year ?

Right now, Proton auto-deletes emails in Trash and Spam after 30 days by default. I’d love to see an option to customize this time.

For example:

1) Privacy-focused users could set it to auto-delete after 1 day, a few hours, or even immediately (skip Trash).

2) Others might prefer to keep deleted emails for 60 or 90 days, just in case they need to recover something.

Having this flexibility would give users more control over their privacy and email management.

Hope you consider adding this in a future update!

Well, it's been almost 10 years and we have yet to see this basic (but really important) feature implemented 😕

While it's technically possible to do right now using Sieve filters feature [ https://proton.me/support/sieve-advanced-custom-filters#managing-expiration ], not everyone is willing/able to learn the Sieve programming language just for this. So it should be added in the user-friendly manner to the "Add filter" UI or in the Folder settings

Auto deletion by folder is very important to me.

I have many years experience with messaging...let me not date myself...cc mail...lol But seriously, we need a way to set expiration aka deletion of emails on custom folders.

I would love specific e-mails to be automatically deleted after x days based on a specific folder, filter or label.

I would like Proton to provide system tags/labels that dictate retention such as 30 days, 60 days, 90 days, 180 days, 365 days. These tags could then be used in rules to assign the tag to all incoming emails. Proton would delete any emails older than the stated tag.

If I haven't looked at an email 180 days, chances are I never will, just delete it.

I would love the ability to delete mail in a folder after x days. This is the main reason I have not switched fully to protonmail.

For newsletters this feature has been around for many years on my old @live.nl account from MS. have been looking for it ever since.
Would be nice if this 2015 idea would get implemented.

This would be a helpful feature. But from a UX perspective, I would make it configurable on a per address basis.

I would suggest this flow:

1. Allow users to set the max. lifetime of messages in the Trash folder (from 0, disable trash functionality completely to 30 days)
2. Allow users to set the max. lifetime of email messages, i.e. the "auto delete" functionality
3. Show a new tab "Expiring Soon" on the left side, just like for scheduled messages, when the functionality is activated.
4. Move email messages to Trash.

This allows fine-grained control over both expiring messages and a "grace period" for messages that have been moved into Trash.

This would be helpful

I wouldn't say for the folder but for filter, the auto delete after x hours feature can help a lot in deleting OTP or verification code email

Along these lines, how about an action in the sieve mail rules, that allow you not only to move or categorize, but also let set the maximum days to keep this mail in this rule?

I feel like this should be a basic feature at this point.