Main Page - Certified Senders Alliance : Certified Senders Alliance

"Thanks to the CSA certification and the direct contact with one of their Mailbox Provider Partners, we were able to quickly resolve our deliverability issues. The proactive and professional assistance from CSA helped us stabilize our open rates and maintain our customers' trust. We are very grateful for CSA's support."

Kyle Leesman - CTO
Greenvelope.com
"After years of utilizing the CSA Monitoring Tool, I can confidently say that the latest release of the Certified Monitor is an invaluable asset. As an ESP, it provides comprehensive insights that enable us to investigate issues at their source and implement the necessary adjustments effectively. This tool has been instrumental in ensuring proper DKIM signing and maintaining compliance with Yahoo and Gmail's requirements. Additionally, its spam complaint monitoring feature has significantly helped us mitigate spam and fraud across our platform, streamlining our daily operations and enhancing overall efficiency."

Kaisha Miath - Abuse & Compliance Specialist
Brevo
"At Moosend, the integration of CSA's Monitoring tool has revolutionized our ability to maintain high deliverability standards. By harnessing complaint metrics and conducting comprehensive analyses, we empower our clients to achieve optimal email performance. As we continue to evolve in the realm of email marketing, our commitment to leveraging advanced tools and strategies remains steadfast, ensuring our clients' messages reach their intended audiences effectively and ethically."

Sarra Papadopoulou - Senior Deliverability Manager
Moosend
"With the help of CSApi, the spam complaint rate and spam traps are loaded into the backend and dashboards are created with the help of Power BI. These are used to monitor deliverability and detect anomalies in order to target customers who have or could cause problems. As even the best of sender is seeing complaints and sometimes spam trap hits, it is less about the exact values and more about the trends and any sudden deviations from the standard. This saves us time in monitoring and we are happy with the external data we can easily use for that purpose!"

Jan Schapmans - Director Deliverability Services
Selligent
"The data provided by the CSA offers our customers significant added value: we combine it with promio.connect data to generate unique KPIs that allow individual optimization of mailings in terms of maximum deliverability and optimal inbox placement. This data is made available in comprehensive dashboards. In addition, we use the data to trigger notifications when certain thresholds are exceeded and to control the permitted mailing volumes. A sender with poor complaint rates will automatically have their reach limited, protecting them and the promio.net infrastructure at the same time."

Ralf Engler - CEO
promio.net

Why Legitimate Senders End Up on Blocklists: Key Takeaways from the CSA Webinar

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 […]

DNS Hygiene: Why Dangling Records Are a Silent Threat to Your Brand’s Reputation

In the world of email deliverability, discussions often focus on content quality, engagement metrics, and authentication protocols such as SPF, DKIM, and DMARC. However, an […]

[Guest Post] Email in 2026: Evolving Technical Requirements, Individualized Filtering, and AI Integration

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 […]

IMPROVE YOUR EMAIL MARKETING WITH CSA CERTIFICATION

GET INSIGHTS INTO YOUR EMAIL SENDINGS

CSA EXPLAINED IN 2 MINUTES

WHAT CERTIFIED SENDERS SAY

LATEST BLOG POSTS

Why Legitimate Senders End Up on Blocklists: Key Takeaways from the CSA Webinar

DNS Hygiene: Why Dangling Records Are a Silent Threat to Your Brand’s Reputation

[Guest Post] Email in 2026: Evolving Technical Requirements, Individualized Filtering, and AI Integration

Watch the CSA Summit 2019 event movie

CSA explained in two minutes

Tobias Herkula: Protecting Brand Identity in Email

Making Inboxes Smart with schema.org

Get in touch with us