Certified Senders Alliance Certified Senders Alliance
  • info@certified-senders.org
  • Newsletter
    • en
    • de
  • Login
    • CSA Certification
  • About CSA
  • Services
  • Participants
  • Events
    • Live Webinars
    • Email Summit
    • CSA on Tour
  • Supporters
  • Resources

Search Results for: complaint rate

From the Practice of the eco Complaints Office (5): Leg...

The sender of newsletters or other promotional emails must always be aware that recipients, at some stage, may no longer wish to receive promotional mailings and may unsubscribe. In this article, w...

26.04.2023

Corporate Digital Responsibility in Email Marketing Pay...

Companies that take digital responsibility and observe legal, technical and ethical principles in their email marketing are more successful in the long term. Information from mailbox providers and Int...

29.08.2022

From the practice of the Complaints Office (2): Are sen...

What is the DOI procedure anyway?  As a matter of principle, the sender must obtain consent before sending advertising mailings. This follows from Article 6 of the GDPR and Article 13 of the ePrivacy...

07.10.2021

What is the eco Complaints Office and what is its role ...

What does the eco Complaints Office do?   The eco Complaints Office has been fighting illegal content on the Internet since 1996. It is embedded in the system of regulated self-regulation and...

06.09.2021

CSA, how did your criteria actually come about?
Pa...

A series of articles on the background to individual CSA criteria The relationship between mailbox providers and the CSA We know: The CSA criteria are strict. Sometimes, corporate IT resources and a...

26.04.2021

Understanding Deliverability: Spotting the Warning Sign...

How monitoring can help to identify deliverability issues early on – and why we should reconsider deliverability The examples in this article are based on real-life cases from the CSA Certification...

27.05.2026

Why Legitimate Senders End Up on Blocklists: Key Takeaw...

Many senders believe they are doing everything right. Their domains are authenticated, their campaigns are permission-based, and their deliverability metrics appear stable. Yet sooner or later, some s...

13.05.2026

[Guest Post] Email in 2026: Evolving Technical Requirem...

Introduction When CSA approached me and invited me to write about the future of the email ecosystem and what I quickly said yes. I'm always happy to discuss email in general and deliverability in par...

18.02.2026

Email Deliverability Around Black Friday: A Data-Based ...

The peak period of email marketing around Black Friday and holiday communications is a stress test for deliverability every year. Senders increase their sending frequencies, campaign volumes spike dra...

18.11.2025

IPs and Domains in Email Delivery: How to Build Reputat...

“The old domain was burned– so we started fresh.” A phrase that is often heard in practice. A supposedly quick fix, but one that usually leads to even greater delivery problems in practice. The ...

29.10.2025

Posts pagination

1 2 3 4 5 >


    Get in touch with us

    eco - Association of the Internet Industry
    Certified Senders Alliance
    Lichtstraße 43h
    50825 Cologne

    Tel.: +49 (221) 70 00 48 - 0
    Fax: +49 (221) 70 00 48 - 111

    Receive unwanted emails from a CSA sender?
    Submit a complaint
    Newsletter
    Facebook share
    • Data Protection
    • Terms of Use
    • Legal Notice
    Change cookie settings