TLS-RPT
If Secure Email Delivery Failed, Would You Know?
If secure email delivery to your domain started failing, would you know? TLS-RPT is how you find out.
Shaun Cooke
Founder of SealedMail and a UK email-security specialist in DMARC, SPF, DKIM and email authentication for regulated sectors. He personally reads the DMARC and TLS reports behind every SealedMail account and writes the company's plain-English guides.
BIMI
BIMI: Your Logo in the Inbox, But Fix This First
BIMI puts your logo in the inbox, but only once your email authentication is right. Here is what to fix first.
MTA-STS
MTA-STS Explained: HTTPS for Your Email
MTA-STS is like HTTPS for email in transit. Here is what it does and why it matters.
Blacklists
Is Your Email Silently Being Blocked? Blacklist Monitoring
Your domain or IP can land on a blacklist without warning, silently blocking your email. Here is why monitoring matters.
Healthcare
DMARC for Healthcare: NHS DSPT Compliance Made Simple
NHS DSPT compliance includes email security. Here is how DMARC protects patients and simplifies your assessment.
Financial services
DMARC for Financial Services: Email Fraud and the FCA
For FCA-regulated firms, email fraud is both a financial and a compliance risk. Here is how DMARC protects your clients and your obligations.
Charity
Email Security for Charities: Protect Donor Trust
Donor trust is a charity's most valuable asset, and email impersonation puts it at risk. Here is how to protect your domain.
Accountancy
DMARC for Accountants: Stop Email Impersonation Before Tax Season
Tax season is open season for email impersonation of accountants. Here is how DMARC stops criminals emailing your clients in your name.
Legal
Friday Afternoon Fraud: DMARC for Law Firms
Friday afternoon completions are a favourite window for email fraud against law firms. Here is how DMARC stops criminals sending in your firm's name.
SPF
Is Your SPF Quietly Broken?
SPF can pass and still be silently broken. Here is how the ten DNS lookup limit quietly switches off your protection, and why it needs continuous monitoring.
Explainer
Who Is Really Sending Email in Your Name? Domain Spoofing Explained
A plain-English video guide to domain spoofing: how criminals send email in your name, why law and finance are prime targets, and how DMARC, SPF and DKIM stop it.
Practical guides
DMARC record syntax explained: every tag, what it does, and what to set it to
A field-by-field reference for the DMARC record itself: what each tag means, what to set it to, and the mistakes that quietly break enforcement.
