Red Sift

Red Sift

Red Sift Limited

London, Greater London, United Kingdom

Email SecurityThreat Intelligence
Founded 201551-200 employees
Profile last updated: August 12, 2026

About

Founded in 2015, Red Sift is a cybersecurity company based in London, United Kingdom working in email security, threat intelligence.

Red Sift is a cybersecurity company focused on proactive security across email, web and PKI. Its products cover email authentication and DMARC management (OnDMARC), brand protection and domain monitoring (Brand Trust), attack surface management, SSL/TLS certificate management, and threat intelligence (Radar), along with free security checker tools. Its products are delivered through the Red Sift Pulse Platform and serve organisations across EMEA, APAC and the US.

Location

London, United Kingdom

Founded

2015

Employees

51-200

Legal name

Red Sift Limited

Focus areas

DMARCemail securityBIMISPFDKIMbrand protectionattack surface managementcertificate managementPKIthreat intelligence

Languages

ENDEFR

Services & products

Security domains

Email SecurityThreat Intelligence

How they deliver

Software

Products

Red Sift OnDMARC

Email security

Cloud-based DMARC, DKIM, SPF and MTA-STS management platform that guides organisations to full DMARC enforcement.

Red Sift Brand Trust

Brand protection

Domain security monitoring, certificate management and threat intelligence to protect brand integrity against lookalike attacks.

Red Sift ASM

Attack surface management

Discovers, monitors and assesses external-facing assets, including vulnerability scanning and continuous monitoring.

Red Sift Certificates

Certificate management

SSL/TLS certificate discovery, expiration tracking and vulnerability assessment.

Red Sift Certificates Lite

Certificate management

Free certificate monitoring for up to 250 certificates with 7-day email alerts.

Red Sift Investigate

Email security

Free domain and email security investigation tool analysing DNS, certificates and configuration risks.

Red Sift Radar

Threat intelligence

Threat intelligence and security monitoring solution with behavioural analysis and real-time monitoring.

Red Sift Radar Lite

Email security

Free security scan checking common email and domain configurations for misconfigurations and risks.

Red Sift Pulse Platform

Security platform

Platform powering Red Sift's email, web and PKI security products.

BIMI Checker

Email security

Free tool to validate Brand Indicators for Message Identification (BIMI) records.

SPF Checker

Email security

Free tool to verify Sender Policy Framework (SPF) configuration and prevent email spoofing.

SubdoMailing Checker

Email security

Free subdomain hijacking and email security checker.

Industries served

Non-profitLegalFinancial ServicesGovernment

Compliance & partners

Compliance frameworks

Google and Yahoo bulk sender requirements

Credentials & affiliations

Awards

Megabuyte Emerging Stars 2025

Megabuyte2025Best Performing Company - Security & Infrastructure

Cybersecurity Excellence Award for OnDMARC

OnDMARC

People

Management & team (3)

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