Email Threat Protection: Stop Phishing, Malware & BEC Before They Reach Your Inbox

Email threat protection is no longer optional – it is a core business requirement. In 2026, over 3.4 billion phishing emails are sent every day, and 94% of all malware is delivered via email. Spambrella’s inbound email threat protection service sits in front of your Microsoft 365 or Google Workspace environment, analysing every incoming message across hundreds of threat vectors before it reaches a single inbox.

Unlike native email security built into M365 or Google, Spambrella adds a dedicated AI-powered layer powered by Proofpoint’s threat intelligence – catching the sophisticated attacks that built-in filters routinely miss: BEC, zero-day malware, impostor emails, and genAI-crafted phishing that bypasses legacy pattern matching.

What Is Email Threat Protection?

Email threat protection is a category of cybersecurity technology designed to detect, analyse, and block malicious content delivered through email – before it reaches the end user. It operates as a security layer between the public internet and your mail server, scanning every inbound message for indicators of compromise.

A modern email threat protection service covers a broad attack surface, including:

• Phishing and spear-phishing
• Business Email Compromise (BEC)
• Malware and ransomware delivery
• Zero-day exploits
• GenAI-generated phishing
• Account takeover (ATO)

In 2026, the email threat landscape has shifted significantly. AI tools have dramatically lowered the barrier for creating convincing, personalised phishing lures. Traditional signature-based filters – and even Microsoft’s built-in Exchange Online Protection – are increasingly insufficient against these newer attack classes. Dedicated third-party email threat protection is now considered a baseline security control by frameworks including NIST CSF 2.0 and the UK’s Cyber Essentials Plus scheme.

Spambrella examines hundreds of thousands of attributes in every email to accurately detect text, image, and attachment-based spam or phishing emails, while automatically adapting to new threats as they appear. Our email threat protection technology removes all malicious and inappropriate content that could negatively impact an organization before it reaches user inboxes.

Our interface logs all inbound emails that pass through a company’s systems, enabling complete message traceability for users.

Email is scanned for any viruses, malware, or other malicious content such as phishing, spoof email addresses, etc. As a result of using outbound email filtering, a company can provide protection to the intended recipients while protecting the professional reputation of its organization.

An email content filter with flexible rules engine

Address issues regarding confidential, malicious, or inappropriate email content that is being sent or received.

Establish a variety of filters, depending on a company’s needs—and block emails based on the size of the email, the type of attachment, the sender or recipient, the country of origin or destination, and the content within the subject line, body or header. This content filtering feature is completely configurable to each company’s needs and harnesses a range of proprietary technologies that determine whether or not each individual email may be allowed in or out of the organization.

Also, customize rules for a number of different situations. The Rules Engine allows emails to be filtered based on a series of select variables, such as message size, country of origin, and destination. The rules can be directed either to the user only, or a group of users chosen by the company administrator or even the entire organization. Users are also able to edit and order rules to their own preferences providing an administrator have granted them permission to do so.

Spambrella Inbound email threat protection

Inbound email threat protection refers to the measures and technologies implemented by organizations to defend against email-based threats originating from external sources, such as malicious actors, phishing attempts, spam, and malware. Here are some key benefits of inbound email threat protection:

Malware Detection and Prevention: Inbound email threat protection solutions scan incoming emails in real time to detect and block malware attachments, malicious links, and phishing attempts. By preventing malware-infected emails from reaching users’ inboxes, organizations can minimize the risk of malware infections and data breaches.

Phishing Prevention: Phishing attacks are a significant threat to organizations, often aimed at stealing sensitive information or tricking users into performing malicious actions. Spambrella inbound email threat protection systems employ advanced phishing detection techniques, such as URL reputation analysis, domain validation, and machine learning algorithms, to identify and block phishing emails before they reach users.

Spam Filtering: Inbound email threat protection solutions include spam filtering capabilities to block unsolicited and unwanted emails from reaching users’ inboxes. By reducing the volume of spam emails, organizations can improve employee productivity, enhance email server performance, and minimize the risk of falling victim to phishing scams or malware distribution campaigns embedded in spam emails.

Content Filtering: Inbound email threat protection systems analyze the content of incoming emails to identify and block messages containing inappropriate or malicious content, such as offensive language, adult content, or suspicious attachments. Content filtering helps organizations enforce acceptable use policies, maintain regulatory compliance, and protect users from harmful or offensive content.

URL and Link Protection: Many inbound email threat protection solutions offer URL and link protection features to inspect hyperlinks included in incoming emails and verify their legitimacy. By scanning URLs against reputation databases, blacklists, and threat intelligence feeds, organizations can identify and block malicious links that lead to phishing websites, malware downloads, or other malicious destinations. Spambrella adds value with an initial ‘scan time’ event, followed by the user’s ‘click time’ event. The benefit of the URL rewrite and check upon click is clear – delayed deployment of ransomware/malware payloads. A tactic used by cybercriminals all too often in the modern cyber security game of cat and mouse.

Real-Time Threat Intelligence: Spambrella inbound email threat protection solutions leverage real-time threat intelligence feeds and databases to identify emerging threats, zero-day attacks, and advanced persistent threats (APTs). By continuously updating their threat intelligence databases, organizations can stay ahead of evolving email-based threats and proactively defend against new attack vectors.

Enhanced Email Security Posture: By implementing Spambrella inbound email threat protection measures, organizations can strengthen their overall email security posture and reduce the risk of email-related security incidents, data breaches, and financial losses. Proactive threat detection, prevention, and mitigation help organizations maintain the confidentiality, integrity, and availability of their email communications and protect against evolving cyber threats.