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[DENIC Presse <presse AT denic.de>]

Dear Sir or Madam,

DENIC has contributed part of the code
for the new version 45 of the free e-mail client Mozilla Thunderbird (https://www.mozilla.org/en-GB/thunderbird/),
which was launched in mid-April 2016: Thanks to this donation to the open-source
community, Thunderbird now for the first time supports, besides numerous
other novel functions, certain special characters (Internationalized Domain
Names, IDNs) such as the German letter "Eszett" (ß) in e-mail
addresses. 

Up to now, if the domain part of an
e-mail address (i.e. the part after the [at] sign) contained the letter
"ß", this letter has been converted automatically to the character
string "ss", despite mail programs having been able to handle
this special character since August 2010 in theory. At that time, the Internet
Standard for Internationalized Domain Names in Applications (IDNA2008)
had been adapted correspondingly by the Internet Engineering Task Force
(IETF).

DENIC, too, had included the "Eszett"
more than five years ago in the set of characters permitted for .de domains
already. However, to date the practicality of this had been limited due
to the lack of support by web browsers and e-mail applications.

The DENIC-coded novelty in Thunderbird
45 is also of benefit to the users of other language families which are
not based on Latin characters: In fact it paved the way for the entire
range of characters under IDNA2008 to be fully available in Thunderbird
starting as of now. Additionally, various characters from Greek, Farsi
and Sinhala, for which re-routing has taken place so far, are now able
to be resolved as characters in domains in their own right.

Overall, the IDNA2008 standard, which
is based on the Unicode character set, allows the coding of thousands of
new characters from various script systems. As a result, tens of thousands
of characters from a multitude of different script systems may be used
actively in Internet browsers and e-mail applications, provided that the
required client support is available. On DENIC’s website, we provide a
list of programs that are currently IDNA-capable (https://www.denic.de/en/know-how/idn-domains/idn-capable-software/).


Donated IDNA Source Code Earlier
Implemented in Firefox 45 Already

Already since the start of March, the
latest version of the Mozilla browser Firefox (Firefox 45) has been using
the IDNA source code donated by DENIC (https://www.denic.de/en/whats-new/news/article/denic-contributes-source-code-for-the-use-of-the-german-letter-eszett-ss-in-firefox-45/)
and thus enables Internet users to access domains that contain certain
special characters such as the German letter "Eszett" (ß). For
the time being, the new code cannot yet be used in the Firefox application
for Android. This is due to the particularities of the Google platform.

A very prompt reaction to the launch
of the IDNA standard came at that time from the developers of the Libidn2
library, which serves to code and decode internationalized domain names:
They implemented the revised algorithm of the IDNA standard on the basis
of a corresponding source code donation by DENIC as early as in 2011. 


Kind regards

Stefanie Welters
Public Relations
-- 

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