Interview with CSA: How Modern Quality Standards Strengthen Trust in Commercial Email Delivery

Through the further development of its IP platform certification, the Certified Senders Alliance (CSA) is aligning its standards even more closely with the requirements of modern commercial email communication. In this interview, Julia Janssen-Holldiek, Head of the CSA, explains why deliverability, authentication and measurable quality standards are more important than ever, and what added value certification offers for sending platforms, senders and, ultimately, recipients.

1. What requirements must sending platforms meet today to ensure high deliverability and a stable reputation?

Sending platforms occupy a crucial position in the chain of trust within the email ecosystem: Brands trust their ESP because of its technical expertise in secure, high-quality email delivery. At the same time, these platforms create the technical foundation for building the necessary trust among mailbox providers.

Key factors include reliable authentication, safeguarding the platform against abuse and providing functions for implementing best practices in list hygiene. To ensure this reliably, access to real-world data that provides insights into sending quality is essential.

2. What added value does CSA certification offer sending platforms and professional senders?

CSA IP platform certification builds trust along the entire email value chain and acts as an independent seal of quality between brands, sending platforms and mailbox providers.

Trustworthy senders generally benefit from higher and more stable delivery through the trust that mailbox and security providers place in certified sending infrastructures. At the same time, certified senders gain access to real-world data that enables continuous monitoring and optimisation of sending quality.
For companies, this means greater transparency, better control over reputation and potential security risks, and a reliable basis for the successful email delivery of their customers.

3.Why are issues such as authentication and reputation becoming increasingly important for the success of commercial email communication?

Essentially, these requirements are not new, as technical standards and proven quality practices have always been the foundation for successful email delivery.

What is new, however, is that mailbox providers have clearly and publicly defined these rules and established them as a binding prerequisite for trust and, therefore, deliverability. What was previously often regarded as best practice or a "nice to have" is now a transparently communicated minimum standard for professional email delivery.

Compliance with authentication standards is the basis for ensuring that the sender receives the reputation they deserve. Behind this lies, above all, the primary objective of mailbox providers: to better protect end users from abuse, fraud and unwanted messages.

4. In future, the CSA will align its certification even more closely with measurable quality and performance metrics. Why do you believe this approach is the right way forward?

Measurable metrics create objectivity, comparability and transparency for all parties involved. Rather than assessing individual incidents in isolation, we rely on several robust data points and clearly defined thresholds that reflect actual sending quality over a specific period.

The key advantage of this approach lies in its relevance: The factors assessed are those that have a demonstrable influence on reputation, deliverability and trust within the email ecosystem. This creates fairness and predictability for certified companies, while also strengthening mailbox providers' confidence in the quality of certified sending platforms.

5. How do not only senders, but also recipients, benefit from high quality and security standards in email traffic?

The clear commitment of our certified senders to high quality and security standards helps to sustainably improve quality across the entire email ecosystem.

For recipients, this means, in concrete terms, a more trustworthy inbox with less spam, phishing and fraud attempts. At the same time, these standards ensure that wanted and relevant messages are delivered with a high degree of reliability. The basis for this is the provision of real-world data from our partner network in our online monitoring tool. This creates greater transparency and visibility for certified senders, enabling quality issues to be identified early and addressed in a targeted manner.

6. What challenges do you see for commercial bulk email in the coming years, and what role will certification play in this?

One of the greatest challenges in the coming years will increasingly be the professionalisation of abuse - from AI-generated spam to sophisticated phishing and fraud attempts backed by an entire industry. Trustworthy senders must be provided with expertise and data in order to set themselves apart - and must also be held accountable in the process.

The relevant keyword here is self-regulation. In this environment, CSA certification will become a crucial lever because it combines measurable quality standards with a unique data ecosystem, proactively making problems visible while also building trust.

You can find out why CSA certification is worthwhile and read about the new regulations on the CSA website.