Wow! 4.9.3 already! :-) I just installed it and entered some test comments...
Email notifications contain new headers but UTF-8 characters still are not displayed properly. I took a look at a raw email message and probably found the cause. Two headers have wrong end-of-line marks:
1. MIME-Version: 1.0
2. Content-Transfer-Encoding: 8bit
These lines end up with CR+LF (Windows) instead of LF (Unix).
One more thing. I am not sure, probably to display properlly UTF-8 encoded characters in a subject line it shoud begin with =?UTF-8?Q? or =?UTF-8?Q? and end up with ?=
After moving sentences among .po files now email sentences are being translated :-) Great! Thanks. I guess the rest of Polish sentences I should enter to new .po files and send them back to you, right?
Regards, MM