Wise optimizes email security and boosts deliverability with Red Sift OnDMARC

In fifteen years, Wise has revolutionized the way people and businesses transfer money around the world. Today, over 15.6 million customers transfer more than £43 billion every quarter across more than 40 currencies, with coverage in over 160 countries. Thanks to a unique banking network, prices are highly competitive, transfer speeds are lightning fast, and customers get the real mid-market exchange rate.

Wise is a digital-first business that relies heavily on email for customer communication and internal operations. Sending more than 150 million customer emails each month, the company prioritizes robust email security measures to protect its users at scale. These controls prevent around 135,000 fraudulent emails monthly, where threat actors are trying to scam customers by sending emails that appear to come from the official Wise domain.

The rapid pace of Wise’s growth has led the company to identify three core areas of day-to-day email operations where strategic focus is required: 

1. Security > Millions of customers trust Wise with their money, moving over £43 billion around the world every quarter. The safety and security of customers’ emails and funds is crucial, and Wise works to maintain a high level of protection across its infrastructure, including all email communications, as its customer base continues to grow.
2. Deliverability > Maintaining open communication with Wise customers is vital. This is accomplished through two critical channels: email marketing campaigns, which inform customers of new offers and services, and transactional emails providing crucial reassurance that money transfers have been successful. It is essential that Wise can reach its customers’ inboxes rather than the spam folder.
3. Insights > Expansion into new markets has organically led to new systems being onboarded while existing ones grow in complexity. The sheer volume of Wise’s daily email traffic, much of it automated and originating from various systems, creates unique challenges. Managing this effectively requires tools that offer a continuous and comprehensive overview of Wise’s entire email traffic flow. These insights are especially critical for understanding deliverability, particularly when executing new marketing campaigns.

To address rising risks of domain spoofing and phishing, Wise turned to Red Sift OnDMARC to implement and operationalize the DMARC protocol.

This gave the team visibility into every system sending on behalf of the Wise domain - crucial for detecting unauthorized senders, preventing impersonation attacks, and ensuring only legitimate services deliver emails to customers.

“With Red Sift OnDMARC, Wise has full visibility into every sender operating across our email ecosystem,” says John. “This insight is essential to maintaining secure and reliable email delivery at our scale and enabling the business to move quickly.”

In addition to spoofing protection, Wise prioritizes the confidentiality of messages it sends and receives. To achieve this goal, Wise leverages MTA-STS (Mail Transfer Agent Strict Transport Security), a standard that requires sending mail servers to use a secure, encrypted connection. By adopting MTA-STS and associated TLSRPT reporting, Wise now has detailed insights into the success and failure rates of secure TLS connections for inbound email delivery.

Red Sift OnDMARC gives Wise a comprehensive and flexible solution for managing its email security policies at scale. It allows for seamless and customizable management of DMARC and MTA-STS policies, tailored to the company's unique needs. Additionally, OnDMARC integrates with Wise’s existing identity provider, enabling seamless access control management and guaranteeing that only authorized personnel can access the platform.

This robust implementation has transformed Wise's email operations with deliverability rates over 99.85%. With secure, reliable delivery across global markets, Wise can maintain consistent customer communication, while meeting regulatory expectations.

For a financial company of Wise's size, reliable and secure email communications are business-critical. Red Sift OnDMARC has been powering this capability for several years, providing the visibility and assurance Wise needs to operate confidently.

OnDMARC’s intelligent report parsing turns complex data into clear and actionable insights that allows teams to identify and remediate misconfigurations quickly, protecting deliverability and eliminating risks that could impact customer communications. With this foundation in place, Wise can launch new marketing campaigns at greater speed than ever before.