Stripe Custom Email Domains: Building Payment Trust with DMARC

Email TechnologySecurity InsightsTechnical Guidance

Online payments rely entirely on trust—in the payment platform, the merchant, and the transactional communication.

Stripe powers payments for businesses around the world. With global headquarters in Dublin and San Francisco, Stripe isn’t only involved when a customer clicks pay; businesses also use Stripe to communicate with their customers about invoices, receipts, failed payments, and other important account and billing information.

And when those communications are sent using a business’s own email domain, another type of guarantee becomes important:

Can the recipient trust that the email actually originated from that domain?

That’s where email authentication and DMARC enter the picture.

How to Set Up Your Custom Email Domain with Stripe

By default, Stripe sends customer emails from its own stripe.com domain. Businesses can, however, configure a custom email domain so customer communications are associated with their own domain.

To enable this, Stripe requires you to verify domain ownership and configure specific DNS records for email authentication:

• Domain ownership verification
• SPF (Sender Policy Framework)  
• DKIM (Domain Keys Identified Mail) 
• DMARC (Domain-based Message Authentication, Reporting, and Conformance)

Most importantly, from an email-security perspective, Stripe explicitly states that “To use a custom email domain, you need to set up a DMARC policy for your domain.”

DMARC (Domain-Based Message Authentication, Reporting & Conformance) works alongside SPF and DKIM to help domain owners authenticate email and define how receiving systems should handle messages that fail authentication. You can check out the specifics within the Stripe Custom Email Domain Documentation.

Stripe recommends that organisations new to DMARC begin with a monitoring policy of p=none and progress towards stronger policies such as p=quarantine and p=reject as their email environment becomes ready.

What do Stripe CNAME and TXT records actually do?

The DNS records required for your   Stripe email setup perform different functions:

• CNAME records configure Stripe’s Mail From and DKIM configuration, allowing Stripe to send properly authenticated email on behalf of your custom domain. 

• TXT records verify domain ownership and publish information such as the domain’s DMARC policy.

Together, these records help establish that Stripe is an authorised sender and allow email sent through their service to be properly authenticated. But adding the records is only part of the story.

What Happens If Your Stripe Custom Email Domain DNS Breaks?

Stripe’s custom-domain requirements aren’t simply checked once during setup. After a custom email domain has been verified, Stripe frequently checks the required DNS txt records to ensure that the configuration remains valid.

If one of those records becomes invalid or is removed, Stripe alerts the account owner. There is an operational consequence: if the DNS configuration isn’t corrected within 48 hours, Stripe reverts customer emails to the stripe.com domain until the issue is resolved.

That note serves as an interesting reminder of something much broader than Stripe:

• DMARC and email authentication isn’t a “set it and forget it” exercise.
• DNS configurations change. Services change. Suppliers change. New sending platforms are introduced. Old ones disappear.
• Maintaining visibility into your email ecosystem matters long after the initial setup.

Stripe’s Get Started document can help you begin your journey.

Why DMARC Matters for Payment Security & PCI DSS Compliance 

Payment-related communication is particularly sensitive.

An invoice, payment reminder, or failed-payment notification naturally asks a recipient to take action. This type of communication is attractive to bad actors because it creates a sense of urgency, leverages financial anxiety, and increases the likelihood that a victim will click a malicious link or disclose sensitive credentials without verifying the source.

Stripe holds a PCI DSS Level 1 certification, which is the highest and most stringent level of security certification available in the payments industry.

To fight payment fraud, the Payment Card Industry Data Security Standard recommends DMARC, SPF and DKIM together.

“When developing anti-phishing controls, entities are encouraged to consider a combination of approaches. For example, using anti-spoofing controls such as Domain-based Message Authentication, Reporting & Conformance (DMARC), Sender Policy Framework (SPF), and Domain Keys Identified Mail (DKIM) will help stop phishers from spoofing the entity’s domain and impersonating personnel.”

Domain impersonation can be used in phishing and business email compromise attempts designed to convince recipients that a fraudulent message originated from a trusted organisation.

SPF, DKIM and DMARC help organisations establish greater protection and brand trust.

• SPF helps identify which infrastructure is authorised to send email for a domain.
• DKIM provides cryptographic authentication that helps verify a message and its associated signing domain.
• DMARC builds on SPF and DKIM, adds domain alignment and gives the domain owner a policy for how receiving systems should handle messages that fail authentication.

DMARC also gives domain owners something particularly valuable: visibility into who is sending email on their behalf.

That visibility can help organisations distinguish legitimate sending services from unknown or unauthorised sources and understand where authentication problems need to be addressed.

Moving from DMARC Visibility to Enforcement

For most organisations, Stripe will be only one part of a much larger email ecosystem.

Microsoft 365, Google Workspace, or another provider may handle employee email. Marketing platforms, CRM systems, customer support tools, HR applications, suppliers, and other cloud services may also send email using the organisation’s domain. Each legitimate sender needs to be understood and correctly authenticated.

That is why implementing DMARC is not simply about publishing a DNS record. A DMARC record can be created in minutes. Understanding everything that sends email on your behalf—and moving safely from monitoring towards enforcement—is the real journey.

The path to secure domain enforcement follows five stages: :

Discover → Understand → Fix → Monitor → Enforce

1. Discover: Identify all sources sending email on your behalf
2. Understand: Evaluate aggregate XML reports 
3. Fix: Update SPF and DKIM alignment across all legitimate sending domains
4. Enforce: Move to p=quarantine or p=reject to achieve stronger protection against spoofing

At p=none, DMARC provides monitoring and visibility, but does not enforce any action when  DMARC checks fail.. As legitimate senders are identified and authentication issues are resolved, organisations can progress towards p=quarantine and ultimately p=reject. At enforcement, DMARC can provide much stronger protection against unauthorised use of the organisation’s domain.

How dmarcian helps

dmarcian helps organisations turn complex DMARC XML reports into understandable, actionable dashboards—identifies legitimate senders, finds authentication problems, and helps teams progress safely towards enforcement without risking deliverability or interrupting legitimate business operations. Our free tools allow you to check your SPF records for errors and bolster your presence as you configure custom email domains.

The goal is not only to have DMARC, SPF and DKIM in place; it is to understand and manage your ecosystem well enough that legitimate email continues to work while unauthorised messages claiming to come from your domain can be acted on according to your DMARC policy.

Payments depend on trust—and so does email

From its Dublin Headquarters, Stripe helps businesses across Europe and around the world power digital payments. Its approach to custom email domains highlights something equally important: digital transactions depend on trust not only in the payment itself but also in the communication surrounding it.

If an email says it comes from your organisation, recipients should be able to trust that it really does. Email authentication helps establish that trust. DMARC adds the visibility and policy framework organisations need to understand who is using their domains and move towards stronger protection.

Whether it is an invoice, a payment notification, or any business communication, trust should not end at the payment stage.

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