I was the contributor of the last greek translation (07/06/2008).
I have a problem using usermin web mail client, for a long time now.
Here is the situation. For example greek gmail sends mail by default in UTF-8 encoding while the one of yahoo sends in ISO-8859-7. About half greek mail applications send mails in 2-byte UTF-8 encoding and the other half in 1-byte ISO-8859-7 encoding.
1) When I use usermin greek language (which is ISO-8859-7) : half e-mails in inbox subject listing do not show their subject well, and when I click on them to see their body, button labels in greek are not shown either. These are e-mails encoded in UTF-8.
So I converted my translations to UTF-8 as well and put them in the respective folders.
2) Trying again setting usermin to greek language in UTF-8 : now the other half e-mails do not show their subject well, and when I click on them, button labels are not shown. These are e-mails in ISO-8859-7.
3) Trying again setting usermin to english (iso-8859-1), or (UTF-8) : Half e-mails each time do not show their subjects well. However when I click on them buttons and body show up correctly (makes sense, since they are in eglish characters which show up correctly in both ISO-8859-7 and UTF-8)
So the best situation for me now is the 3rd, which however does not list all subjects well and ofcourse does not use usermin greek translation
I think to solve this problem, mail clients use always the same encoding for displaying e-mails for example UTF-8. Then they somehow detect the encoding of the incoming e-mail, and if it is not UTF-8, they convert the subject and the body characters to UTF-8 before showing.
From what I figured out usermin does not convert encodings but shows email body, changing html page encoding to the one of the incoming e-mail.
This is a major problem for me now since a lot of customers complain and redirect their e-mails to another web client.
I submit greek translations converted in both UTF-8 and ISO-8859-7 (sending e-mail to firstname.lastname@example.org).
I hope to hearing from you soon!
Happy new year!