Mimecast Email Security

Mimecast Email Security is a comprehensive cloud-based email security suite that provides protection against the full range of email threats, including phishing, spear-phishing, impersonation, malware, ransomware, and internal security threats. A wide range of email security offerings can be incorporated into the solution to provide a custom level of protection based on the needs of your organization.

The Mimecast Email Security solution allows administrators to enforce email security controls and neutralize sophisticated email security threats. The solution includes cloud-based antivirus and anti-spam protection mechanisms to block malicious code and unsolicited bulk email, and a host of other features to protect mailboxes from non-malware threats. More than 17,000 Office 365 customers use Mimecast Email Security to protect their Office 365 environments, with protection provided at the email perimeter through the Mimecast Secure Email Gateway, as well as internally and beyond the perimeter.

The Mimecast Secure Email Gateway

The Mimecast Secure Email Gateway is a 100% cloud-based, constantly updated email security solution that provides real-time protection against the full range of email threats. The solution is provided with an SLA that guarantees 100% protection from known malware threats, zero-day threat protection, and a spam catch rate of 99% with 0.0001% false positives. The solution provides protection for data in transit to prevent interception and email passes through the gateway without a copy being stored to eliminate legal, privacy, and latency issues.

Mimecast Email Security Threat Protection Features

Through Mimecast’s Email Security Targeted Threat Protection service customers are protected from sophisticated cyberattacks that aim to steal money, data, credentials, and intellectual property. The service includes attachment protection, malicious URL protection, impersonation protection, and insider threat protection.

URL Protect

URL Protect provides pre-click protection to identify and block malicious URLs, URLs in inbound emails are rewritten, and time of click protection stops users from visiting malicious websites. The solution protects against malicious URLs on any device, whether users are on or off the network.

Attachment Protect

Attachment Protect uses multiple signature-based detection mechanisms to identify known malware and sandboxing, static file analysis, and security inspections to identify zero-day malware threats. Attachment Protect identifies and blocks malicious code and suspicious embedded objects and converts PDF and Office files to a safe format for delivery to end users, retaining the original which can be requested and scanned on demand to save time.

Internal Email Protect

Internal Email Protect extends Mimecast’s security controls to internal emails sent by employees to prevent attacks from spreading internally and block threats that are initiated by employees. Controls can also be applied to block attempts by employees to send sensitive data outside the organization via email.

Impersonation Protect

Impersonation Protect provides enhanced protection against email impersonation attacks such as Business Email Compromise (BEC), sender spoofing, and the use of external domains that impersonate trusted third-party relationships. Email impersonation attacks are identified and blocked using DNS authentication services including SPF, DKIM and DMARC. The solution also detects non-western character and Punycode domains and offers typosquatting protection.

Mimecast Threat Intelligence

Mimecast monitors billions of emails each month through the Mimecast Security Operations Center (MSOC) and identifies emerging threats and feeds the threat intelligence data into its email security solution. Threat intelligence data can be accessed through the Threat Intelligence Dashboard and is provided in an easily consumable format to allow users to quickly identify new attack trends and take proactive steps to block threats. The Mimecast Email Security solution also incorporates a variety of third-party threat intelligence feeds.

Additional Email Security Solutions

Additional email security offerings include data leak protection, email encryption, email archiving, email continuity, email security training and phishing simulations, a content policy gateway for email compliance, and a Large File Send solution to eliminate the need for document sharing services for large files.


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