Filtering of Incoming messages

[hitam4450]

for organizing message it would be very useful to incorporate a filtering mechanism, based on different conditions e.g. specific account, specific sender, Subject, etc., which will be applied to all incoming messages!

regards, hitam4450

Todo

• Basic sieve support Sieve #4472
• Editor with syntax highlighting
• UI that can build rules

---

There is a $800 open bounty on this issue. Add to the bounty at Bountysource.

---

There is a $800 open bounty on this issue. Add to the bounty at Bountysource.

[zeugmatis]

This is a nice idea but it is important to draw a clear distinction between the MUA (Mail User Agent) and MDA (Mail Delivery Agent - filtering). MDA solutions on the server side already exist e.g. procmail, maildrop, Dovecot LDA module and others - if you have SSH access to your server, you can set up your rules to do this today. 😄

Using an MDA, your filters are only maintained in one place and you have consistent behavior across all of your devices / email clients. Otherwise you have to maintain the same rulesets across all your devices, and can have confusion / possible race conditions when checking on e.g. the cellphone, then check on webmail and suddenly emails moved around. Finally, when using an MDA rules will execute immediately when mail is delivered - so things like vacation autoresponders, forward-to based on From: etc. do not have to wait for you to login.

It is a good idea, but warrants it's own app I think? Since MDA's can have a lot of accidental complexity - it seems simple at first glance but can get so much more complex, see for example the number of options in the native clients like apple's Mail.app.

[zeugmatis]

BTW if this is to be pursued either in Mail app or a separate MDA app for NC, I would like to mention Sieve, which is based on RFC 5228 - already has existing support in many clients/servers/existing API's etc.

[laurentdinclaux]

Of course, a sieve UI is much needed.
A library that could be used: http://sieve-php.sourceforge.net/
Horde does it: https://www.horde.org/apps/ingo

[pierreozoux]

Also be able to filter read/unread on inbox.

[ediazcomellas]

A sieve management screen is pretty much a standard in webmail systems. I am willing to setup a bounty for this feature. Please contact me for details.

[jancborchardt]

@ediazcomellas you can donate to the bounty at https://www.bountysource.com/issues/37588385-filtering-of-incoming-messages :)

cc @hitam4450 @zeugmatis @laurentdinclaux @pierreozoux if you’d like this feature too, any donation or contribution is appreciated! 🎉

[ediazcomellas]

Is there anyone willing to make a try on this issue? I've expanded the bounty to $125. I hope it helps

[jancborchardt]

@ediazcomellas thanks a lot for the bounty! :)

@nextcloud/mail @ChristophWurst @Gomez @lcalaresu anyone up for solving this? :)

[ChristophWurst]

FYI: there's a pretty high bounty set for this ticket. Thus, a potential bounty hunter might be interested in implementing this feature. If so, please contact us first here in this ticket and let us know how you want to solve this problem. This will ensure that it's done right and you don't waste too much time on a solution that won't be integrated. Hope that makes sense. Thanks.

[ediazcomellas]

I've raised the bounty to $250... anyone willing to solve it? @denim2x @ChristophWurst @Gomez @lcalaresu @nextcloud/mail
Please contact @ChristophWurst to make sure it is integrated with the main tree. It wont be accepted as a solution if it is not merged into upstream.