About CSA Who is the Certified Senders Alliance (CSA)? The Certified Senders Alliance (CSA) is a service from eco – Association of the Internet Industry in cooperation with the German Dialogmark...

27.04.2017

Back in 2015, the CSA wrote about the benefits of List-Unsubscribe headers in emails. Since then, more providers offer unsubscribe functionality within their web interface and email software like iOS...

14.03.2017

To put it in a nutshell, DomainKeys Identified Mail (DKIM) enables a receiving email server to authenticate the sender of an email. The sending email server digitally signs each sent email. These sign...

07.06.2016

The List-Unsubscribe header is a simple way to offer the recipients an alternative way toeasily unsubscribe – with a single click – from a newsletter, if the provider or email-clientuses the given inf...

13.11.2015

Why was IPv6 developed? IPv4 allows for around 4 billion addresses, of which 3.7 billion are usable. This address space is becoming increasingly exhausted. At the end of July 2015 only 160,000 IPv4 a...

03.09.2015

There are still uncertainties in the formulation of the declaration of consent for promotional e-mails. Under CSA complaints procedure this leads to more and more pronounced reprimands against CSA sen...

02.06.2015

The German Federal Court of Justice (BGH) announced an important verdict (I ZR 208/12) on the (im)permissibility of recommendation emails on 12 September 2013. The circumstances the BGH examined were ...

12.08.2014