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What is email security?
Email security is the combination of controls, policies and technologies used to protect business email from cyber threats such as phishing, malware, spam, spoofing and business email compromise. For most organisations, email remains the most targeted entry point for attackers, which makes email security a core part of cyber resilience rather than a standalone add-on.
Email Security FAQs
Email security matters because most cyber attacks still start with a message that looks legitimate. For a potential client, the real question is not whether email is a risk, but how to reduce that risk without creating friction for users or complexity for internal teams.
What does email security include?
Email security usually includes spam filtering, anti-phishing controls, malware scanning, sender authentication, account protection, policy controls and ongoing monitoring. Together, these measures help prevent malicious messages from reaching users and reduce the chance of account compromise.
Why is email security important for businesses?
Email security is important because email is one of the most common ways attackers enter a business. A single malicious message can lead to stolen credentials, financial fraud, malware or wider operational disruption.
How does the Microsoft stack help with email security?
The Microsoft stack helps by combining filtering, authentication, identity protection and threat visibility across Microsoft 365. Microsoft Defender strengthens protection against phishing, malware and suspicious behaviour, while authentication standards such as SPF, DKIM and DMARC improve trust in your domain.
What is DMARC and why does it matter?
DMARC is an email authentication protocol that helps stop attackers from sending fraudulent emails using your domain. It works with SPF and DKIM to verify whether a message is legitimate and decide whether it should be delivered, quarantined or rejected.
What is phishing protection?
Phishing protection helps identify and block deceptive emails designed to trick users into clicking malicious links, opening harmful attachments or handing over credentials. It is especially important as phishing messages become more targeted, more convincing and increasingly AI-assisted.
Can email security help with compliance?
Yes. Email security can support compliance by improving control over account access, message authenticity and data protection. It can also strengthen alignment with standards such as Cyber Essentials, Cyber Essentials Plus and requirements linked to secure email practices.
Do businesses still need user awareness training?
Yes. Technology is essential, but staff awareness remains critical because many attacks still rely on human interaction. Training helps users recognise suspicious emails sooner and reduces the likelihood of phishing-related incidents.
UK businesses experienced phishing attacks
Unauthorised access attempts blocked with MFA
AI phishing increase
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How Hubtel IT Helps
Hubtel IT helps businesses strengthen email security through a consultancy-led approach that connects protection, policy and day-to-day operations. We assess where email risk exists across your users, domain, devices and Microsoft 365 environment, then implement the right controls to reduce exposure without adding unnecessary complexity.
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Phishing Protection
Phishing protection helps stop fraudulent emails that are designed to look genuine. These messages often try to trick staff into clicking a link, opening an attachment or sharing passwords and payment details. Good phishing protection reduces that risk by identifying suspicious content before it reaches the inbox and by helping users spot warning signs earlier.
Spam Filtering
Spam filtering separates legitimate emails from unwanted, irrelevant or potentially harmful messages. For a business, that means less inbox clutter, fewer distractions for staff and a lower chance of someone opening a suspicious email by mistake. It improves both productivity and day-to-day email security.
DMARC
DMARC is a security standard that helps protect your business domain from email impersonation. In simple terms, it helps receiving email systems check whether a message claiming to come from your company is actually genuine. That helps prevent attackers from sending fake emails in your name and supports stronger trust in your brand.
Business Email Compromise
Business email compromise is when an attacker pretends to be a trusted person, such as a director, colleague or supplier, to persuade someone to transfer money or share sensitive information. These attacks are often highly convincing because they rely on social engineering rather than obvious malware. Strong email security helps reduce this risk through filtering, identity checks and user awareness.
Microsoft 365 Email Security
Microsoft 365 email security refers to the protections available within the wider Microsoft environment to help secure email accounts, messages and user activity. This can include threat detection, anti-phishing controls, suspicious activity monitoring and account protection. For businesses already using Microsoft 365, improving configuration and layering the right security controls can significantly strengthen resilience.
Email Authentication with SPF, DKIM and DMARC
Email authentication is the process of checking that emails sent from your domain are genuine and have not been altered or spoofed. SPF confirms which systems are allowed to send on your behalf, DKIM helps verify that a message has not been tampered with, and DMARC tells receiving servers what to do if a message fails those checks. Together, they help protect your reputation, improve email deliverability and reduce the risk of impersonation.
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