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Enhanced DunningExpress™ Email Delivery

Strong email deliverability depends on protecting sender reputation while maximizing the number of valid customer addresses that can be reached.

Cleanlist has recently enhanced the email validation and delivery process behind DunningExpress™ to do both more effectively.

After more than a month of live testing, the improvement is significant:

Approximately 94% of submitted email addresses are now eligible for sending, up from approximately 82% previously.

That means DunningExpress™ can now send to roughly 15% more email addresses while continuing to protect the sender reputation and deliverability standards our clients depend on.

The enhanced process is already live across all DunningExpress™ collection-industry accounts. There’s nothing you need to change, and there is no additional cost. The improvement is automatic and already working for you.

We continue to invest in the technology behind DunningExpress™ so our clients benefit from greater reach, data leverage, better performance, and lower operating complexity without having to manage additional systems or vendors.

If your organization currently sends some customer communications through other platforms, contact Richard Dunwoody or Sarah Lightfoot to discuss moving more of that volume to DunningExpress™.

About DunningExpress™

Built for Collections and Accounts Receivable Teams

DunningExpress™ combines Cleanlist’s data-intelligence with secure, high-volume letter and email delivery in one integrated platform.

The result: better data, greater reach, verified production accuracy, and a complete communication record — all backed by Cleanlist’s SOC 2 Type II certified environment.

About Cleanlist

Cleanlist is Canada’s largest customer data company. Founded in 2008, Cleanlist cleans, enriches, and validates business and consumer data and is a recognized expert in data-driven document composition and one of Canada’s largest data providers for digital and offline marketing.

Cleanlist operates the only SOC 2 Type II certified data center in its industry, supporting solutions including ResponseCanada™, DunningExpress™, LetterVault™, and the Digital Letter Factory.

🔍 Ready to Elevate Your Data?

Every improvement you make to your contact data is a step toward stronger performance, fewer errors, and better results. 

Lets get you started with a Free Data Discovery Report. You’ll discover how many of your records are outdated or contain critical errors — and how many can be corrected and saved. Talk to Cleanlist to find out how. 

Cleanlist is Canada’s largest customer data company. We clean, enrich, and validate business and consumer data. We’re also experts in data-driven document composition and Canada’s largest data provider for digital and offline marketing.