Impersonation Protection

Protect Your Domain. Protect Your Brand.

A person using a laptop with red warning messages on the screen, including 'DMARC Failed,' 'Sender Not Verified,' and 'Authentication Failed.' A white human mask sits next to the laptop on a dark desk.

Email impersonation is one of the most common and costly forms of cyberattack, responsible for billions in global losses each year. Attackers exploit trust, sending messages that appear to come from executives, suppliers, or even your own domain. One spoofed message can lead to wire fraud, data theft, or reputational damage that's hard to repair.

That's where DMARC (Domain-based Message Authentication, Reporting & Conformance) comes in. It verifies that every email claiming your domain is legitimate, stopping spoofing and phishing attempts before they ever reach an inbox. As certified Red Sift partners, THINKFLEX deploys OnDMARC to make email authentication simple, visible, and fully managed so your business and brand stay secure.

Let’s secure your domain and protect your reputation.

Infographic warning against email spoofing and phishing, showing hackers impersonating employees, vendors, and organizations to steal credentials and spread malware, with tips to protect domains and stop email spoofing.

Stop Domain Spoofing & Impersonation

Cybercriminals don't need to breach your network to damage your business. They just need to pretend to be you. Domain spoofing allows attackers to forge emails that appear to come from your organization, tricking employees, clients, and vendors into sharing credentials, wiring funds, or clicking malicious links.

DMARC (Domain-based Message Authentication, Reporting & Conformance) stops impersonation at the source. By implementing DMARC with SPF and DKIM, you explicitly authorize which mail servers can send on your behalf and instruct receiving systems to reject everything else. As certified Red Sift partners, we deploy OnDMARC to give you full visibility into who's sending email using your domain, enforce strict authentication policies, and monitor compliance in real time.

A graphic warning about email phishing scams featuring a man and woman in business attire with skeptical expressions, a computer screen showing a phishing email alert, and icons indicating doubting credibility and questioning security.

Strengthen Brand Reputation

Every email sent from your organization carries your brand's reputation. Every spoofed message that slips through erodes trust. When clients receive phishing emails that appear to come from you, they question your credibility and commitment to security.

DMARC authentication transforms your domain from a vulnerability into a trust signal. When you publish a DMARC policy, you're publicly declaring that you've validated every message sent on your behalf. Email providers recognize this, recipients see verified communication, and partners know you're serious about protecting shared relationships.

We help you implement DMARC enforcement properly using Red Sift OnDMARC, ensuring your policies protect without disrupting legitimate mail flow.

An infographic about email security and delivery issues. It shows email statuses: blocked, filtered, buried in spam, with icons and labels. It emphasizes missed deals and frustrated customers, highlighting the importance of trust and authentication signals to improve inbox placement, featuring logos of Gmail, Outlook, and Yahoo.

Improve Email Deliverability

Legitimate business emails get blocked, filtered, or buried in spam folders, costing you deals and frustrating customers. The problem isn't always content. It's trust. Mail providers like Gmail, Outlook, and Yahoo use authentication signals to decide whether your emails deserve inbox placement.

DMARC, combined with SPF and DKIM, proves your emails are legitimate. When receiving mail servers see proper authentication, they treat your messages as verified communication from a trusted source. That means higher inbox placement rates, fewer spam flags, and better engagement.

We deploy Red Sift OnDMARC to monitor your email authentication health, optimize your SPF and DKIM records, and ensure enforcement policies improve deliverability without blocking legitimate messages.

An infographic titled 'Email Authentication Essentials' highlighting DMARC as the key to compliance, featuring icons for NIST, PCI DSS, ISO 27001, and GDPR, with descriptions of their roles in email security and data protection.

Meet Compliance Standards

Regulatory frameworks increasingly require email authentication as a baseline control. NIST calls for identity verification mechanisms. ISO 27001 expects communication security controls. PCI-DSS mandates protection of cardholder data in transit. GDPR requires appropriate technical measures to safeguard personal information. DMARC directly addresses all of these.

By deploying DMARC, you're implementing a control that auditors, insurers, and regulators recognize as evidence of due diligence. You can demonstrate that your organization has taken measurable steps to prevent email-based fraud and validate the authenticity of communications.

We implement DMARC using Red Sift OnDMARC, providing the reporting, enforcement, and documentation you need to satisfy audits and demonstrate compliance.

    • Start monitoring

    • Collect 2-4 weeks of data

    • Discover all email sourcesxt goes here

    • Service identifies misconfigured sources

    • Provides specific fix instructions

    • Verify fixes in real-time

    • Test enforcement with small percentage

    • Monitor for issues

    • Service tells you if anything breaks

    • Gradually increase percentage

    • Continuous monitoring

    • Address issues as they arise

    • Full enforcement

    • Complete protection

    • Ongoing monitoring for new senders

DMARC Done Right - From Setup to Enforcement

Why It Matters

Email is the Easiest Way In

Attackers don’t need to hack your systems—they just need to look like you. Without authentication in place, anyone can send an email “from” your domain. These attacks target employees, customers, and partners, undermining the trust your brand is built on. DMARC closes that gap, proving to mail servers that your messages are real—and blocking everything else.