When evaluating an email that contains non-ASCII characters in the From: header, the value of 'internationalized' remains "false" when static parseAuthor(author, internationalized) is evaluated, and the value of "from" assigned by parseAuthor() remains null rather than expected the email address written in the From: header.

I have attached two test emails, one with Japanese characters in the sender and one without, as well as the debugger screen.

1. --> From: Naozumi YAMADA licsak@mx.bw.dream.jp
   Ref1.eml.txt --> ref1 (good).png | from = licsak@mx.bw.dream.jp

Ref1.eml.txt

2. --> From: =?UTF-8?B?5bGx55Sw?= licsak@mx.bw.dream.jp
   Ref2.eml.txt --> ref2 (bad).png | from = null

Ref2.eml.txt