Sender Registry
Public intelligence.
Free tools, live threat intelligence and reference material, open to anyone. The intelligence here is aggregate and anonymised, never any individual organisation's own reports.
Free tools
Use these any time, no account needed. Nothing you paste or upload is stored.
Check a Domain
Look up any domain, sender or link against the network in seconds.
Check a Payee
Before you pay, check whether a bank account, crypto wallet, phone number or payment handle is a network-confirmed fraud money-target.
Domain Security Grade
An A to F grade for how well a domain is protected against being impersonated, with the exact DNS fixes emailed to you.
Impersonation Check
See which lookalikes of your domain are registered and live right now, the ones that could send fake invoices or host a phishing page in your name.
Email Header Analyzer
Paste email headers and see the delivery path, SPF, DKIM and DMARC explained in plain English.
Email Security Analyser
Upload a DMARC report or a suspicious .eml file and get a plain-English verdict on what it shows.
Threat intelligence
Aggregate, anonymised signal from the network. Never the reports of any individual organisation.
Scam of the Week
A real, anonymised campaign from the network, in plain English, most weeks.
In the News
Real email scams and fraud from recent weeks, and how Sender Registry helps businesses catch them.
Public Email Threat Index
Whether reported suspicious email activity is rising or falling, network-wide.
Property Email Threat Index
Threat activity specifically affecting the property and estate agency sector.
Legal Email Threat Index
Threat activity specifically affecting solicitors and legal practices.
Accountancy Email Threat Index
Threat activity specifically affecting accountancy and finance practices.
Retail Email Threat Index
Threat activity specifically affecting retail businesses.
Reference
Plain-English background and where to turn for help.