We either encode the folder name in UTF-8, dropping support for older versions of Cyrus, or we introduce a new configuration parameter to set the encoding (for example, SOGoSieveFolderNameEncoding = UTF-8).

I am opting for the new config parameter :-)

First patch here: https://github.com/alexcloutier/SOGo/commit/cb5802bf39fe92a408ed4df5f6c73ff236b40d01

I used mentioned patch and found no problem.
It seems complete Sieve chain works fine now.
Thanks.

Please can you put this patch into master?
Thank you.

https://github.com/inverse-inc/sogo/commit/eb7cabac717e2286e9f3368a75f89be4b1870dee

The same issue is back in 2.2.9

I looked on it.
When I apply "First patch" from 2014-03-06 to vanilla SOGo-2.2.3, encoding names of mail folders in Sieve filters works well. That is setup I used.
Now I tried to use vanilla SOGO-2.2.4 and encoding is broken.
So this issue was not solved in any production version.

SOGo 2.2.9
SOGoSieveFolderEncoding UTF-8
But I see fileinto in UTF-7 in dovecot

So, either this bug is not fixed or I get something wrong.

After adding SOGoSieveFolderEncoding UTF-8, I did restart of memcached and sogo

Should be fixed for good.

https://github.com/inverse-inc/sogo/commit/15be4861b6574ce7573e2ebc6e3d3bc3fb10110f

I tried current git version just now.
It includes last patch, but I see no change in generated folder name.
When I create new filter and use folder name "Oblí", SOGo uses UTF-7 encoded folder name in sogo.sieve file:

if anyof (header :contains "subject" "obli") {
fileinto "Obl&AO0-";
}

This bug was not solved in SOGo 2.2.10.
I use dovecot 2.2.9 on the mail server and I see the same trouble.

Oh - I'm sorry, it really works fine in 2.2.10.
I overlooked missing new parameter
SOGoSieveFolderEncoding = UTF-8;
in sogo.conf on my testing machine.
Please, close this track.
Thank you very much for your work.