--- title: Mimecast Advanced Email Security Reviews meta\_title: 'Mimecast Advanced Email Security Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter 348 reviews by the users' company size, role or industry to find out how Mimecast Advanced Email Security works for a business like yours. aggregate\_rating: rating\_value: 4.4 review\_count: 348 scale: '5' date\_modified: '2026-08-09' parent\_category: name: Email Security url: https://www.g2.com/categories/email-security --- # Mimecast Advanced Email Security Reviews & Product Details Visit Website Email Security, Cloud Integrated (CI) protects organizations against all forms of email-based attacks, from phishing and credential theft to ransomware and zero-day threats. This solution deploys behind M365 to collect emails after they have passed through Microsoft security, reinspect them, and take action as needed. With a setup time of just four minutes and out-of-the-box settings designed to optimize security immediately, Email Security CI delivers best-in-class efficacy in the simplest way possible. Customers get the full power of Mimecast’s AI-powered detection and threat intelligence in a solution built for the reality of navigating today’s hostile threat landscape with limited time and resources. Email Security CI also offers a fully integrated Awareness Training solution to help organizations easily and effectively reduce the risk of human error. * * * Product Website Mimecast Advanced Email Security Seller [Mimecast](https://www.g2.com/sellers/mimecast) Discussions [Mimecast Advanced Email Security Community](https://www.g2.com/products/mimecast-advanced-email-security/discuss) Languages Supported German, English Solution Type All-in-One Show More ## Value at a Glance Averages based on real user reviews. ### Time to Implement 2 months [ View More Pricing Information ](https://www.g2.com/products/mimecast-advanced-email-security/pricing) ## Mimecast Advanced Email Security Integrations (3) What do users say about integrations? Verified by Mimecast Advanced Email Security [ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Microsoft 365 ](https://www.g2.com/products/microsoft365/reviews)[ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Microsoft Outlook ](https://www.g2.com/products/microsoft-outlook/reviews)[ ![Product Avatar Image](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Product Avatar Image") Microsoft Teams ](https://www.g2.com/products/microsoft-teams/reviews) Show More ![Vashcini J.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Vashcini J.") VJ Vashcini J. Technical Presales Engineer Enterprise (\> 1000 emp.) 7/27/2026 Business partner of the seller or seller's competitor, not included in G2 scores. "Excellent Protection Against Email Threats" 4/5 What do you like best about Mimecast Advanced Email Security? 1. Mimecast effectively blocks phishing, malware, ransomware, and BEC attacks before they reach user inboxes, improving overall email security. 2. The AI-driven threat intelligence helps identify suspicious emails, malicious URLs, and impersonation attempts with high accuracy. 3.The UI/UX is simple and intuitive, making it easy to monitor threats, manage policies, and review security incidents. 4. The seamless integration with Microsoft 365 helped us deploy and manage email security quickly without disrupting existing workflows. 5.Mimecast provides reliable and consistent performance, scanning emails efficiently while maintaining smooth email delivery and minimal impact on users. 6. The solution offers good value by reducing phishing incidents and minimizing the time spent on email threat investigations, delivering strong ROI. 7. The onboarding process was straightforward, and the support team has been responsive whenever technical guidance or troubleshooting was needed. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The solution can be expensive for smaller organizations, particularly when additional modules and advanced features are required. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Before Mimecast, we faced challenges with phishing emails, spam, malicious attachments, and impersonation attacks, which increased security risks and IT workload. Mimecast's AI-powered email security now proactively blocks these threats before they reach users. Its easy UI/UX, seamless Microsoft 365 integration, reliable performance, and responsive support have improved email security while reducing administrative effort. Overall, it delivers strong ROI by helping prevent email-borne attacks and improving operational efficiency. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic VG Vishnu G. Cyber Security Associate Mid-Market (51-1000 emp.) 2/12/2025 "Effective Email Security with Room for Configuration Improvement" 4.5/5 What do you like best about Mimecast Advanced Email Security? I like using Mimecast Advanced Email Security for both email security and email archiving. It effectively scans all emails, including attachments, which helps in blocking or holding emails with malicious links before they reach users, thereby protecting us from phishing attacks. I appreciate the option to release suspected emails blocked by Mimecast. During the initial setup, having vendor support made the configuration easy because they did all of it. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? I feel the configuration should be more user-friendly. It's a bit complicated to whitelist particular email accounts, like our GM or CEO. It's not easy to create rules for incoming and outgoing emails for individual users. There should be an option to whitelist users so that all outgoing for a particular user shouldn't be blocked, and emails from specific users should not be blocked for specified users. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Mimecast Advanced Email Security filters emails to block malicious ones and prevent phishing. It scans attachments and provides email security and archiving. It also lets me release suspected emails, making email management safer and more efficient. Review collected by and hosted on G2.com. Show More 4/28/2026 Current UserValidated ReviewerIncentivizedSource: Thank You page TR Tristan R. Customer Service Manager Small-Business (50 or fewer emp.) 4/7/2026 "Reliable, Intuitive Spam Filtering with Strong Weblink Protection" 5/5 What do you like best about Mimecast Advanced Email Security? I appreciate the intuitive spam filtering - this greatly reduces the junk mail in my inbox. The spam filter is reliable, and I receive a reminder email each day that I still have messages "on hold" in moderation. I am glad there is an automated feature that allows me to block senders or domains, but also allows me to permit senders or domains. This is very helpful to reduce the time I spend moderating emails. Another feature I really like is the protection with weblinks. The security with the weblinks also integrates with Teams, so I know I am covered in both Outlook and Teams. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? One downside is the time it takes to receive security codes for weblinks. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Mimecast keeps up with the bots and scammers by outsmarting them. It has helped protect me from phishing attempts, and it saves me time by filtering out spam. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic Review from User Profile ![Jeremy A.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Jeremy A.") JA Jeremy A. Information Technology Analyst Enterprise (\> 1000 emp.) 3/17/2026 "Great Configurability, Needs Better API Integration" 3.5/5 What do you like best about Mimecast Advanced Email Security? My favorite thing about Mimecast Advanced Email Security is the relationship with our CSR, Brett Lenzi, who always jumps into support tickets, escalates them, and is a constant good-will advocate for us. I like how rules are easily configurable and the platform is always coming out with improvements. I appreciate the creation of custom rules to block new phishing patterns or suspicious domains and the ability to fine-tune filtering based on our specific environment, like by department. The intuitive rule building interface allows me to quickly make adjustments, and I find it valuable that we're continually working to reduce false positives via allow-lists and block-lists. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? We really need an API solution - we are missing out on connecting some services due to lack of API integration - MX records are really a legacy method. Limited automation capabilities - we can't programmatically pull email security metrics into our centralized security dashboards or SIEM platforms. Manual reporting processes - security incident data has to be manually exported rather than automatically fed into IR workflows. Disconnected threat intel - can't easily correlate Mimecast threat data with other security tools to get a full picture of attack campaigns. User provisioning inefficiencies - onboarding new employees or managing departing staff, we have to manually update policies rather than integrating with our identity management system via M365. The mx record approach limited my ability to create the interconnected security ecosystem that modern organizations need. API connectivity would broaden the efficacy of the overall impact of email security within the security stack. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? I use Mimecast Advanced Email Security to secure our email operations. It allows me to create custom rules to block phishing patterns and fine-tune filtering for our specific environment, reducing false positives. The intuitive rule-building interface lets me make quick adjustments. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite AS Ajay S. Senior System Engineer Mid-Market (51-1000 emp.) 12/16/2025 "Robust Email Security Made Simple and Effective" 4.5/5 What do you like best about Mimecast Advanced Email Security? Mimecast Advanced Email Security stands out for its strong protection against phishing, malware and impersonation attacks while remaining easy to manage. The interface is intuitive, making daily monitoring, policy updates and threat investigation straightforward even for small security teams. Implementation is smooth and well-documented, with minimal disruption to existing mail flow. Integration with M465 is seamless and features like URL protection, attachment sandboxing and impersonation protection work effectively out of box. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? Mimecast Advanced Email Security is a powerful platform, the interface can feel complex at times, especially for new administrators. Some settings are deeply nested, which can make advanced policy tuning and troubleshooting less intuitive. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Mimecast Advanced Email Security addresses critical email-based threats such as phishing, spear- phishing, malware, ransomware and business email compromise. By providing advanced threat detection, URL and attachment analysis and impersonation protection, it significantly reduces the risk of users falling victim to malicious emails. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![Aaron V.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Aaron V.") AV Aaron V. IT Director Mid-Market (51-1000 emp.) 2/4/2026 "Customizable Email Security Policies That Protect Against Many Threats" 3.5/5 What do you like best about Mimecast Advanced Email Security? It offers a wide range of email security policies with a strong level of customization. We’re able to protect our environment against many different types of threats, including dangerous malware, phishing attacks, impersonation attacks, and more. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The interface isn’t very intuitive, and it can be a bit difficult to navigate through all of the policies and find exactly what I need. Customer support has been hit or miss as well. Sometimes I get good support, but other times it’s been difficult and lengthy to get my issues resolved. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? It solves my email security needs. I require a strong security platform to protect me from spam and phishing attacks, and this helps with that. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic JQ Jissel Q. Accountant Mid-Market (51-1000 emp.) 4/29/2026 "Essential Email Security with Seamless Outlook Integration" 4.5/5 What do you like best about Mimecast Advanced Email Security? I like the ease of use of Mimecast Advanced Email Security and how well it integrates with Outlook. Having a tool that makes security easy and can be used with our other software is essential. The initial setup was also easy. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? It may block emails I expect to receive, but I prefer it this way for security. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? I use Mimecast Advanced Email Security for secure inbox monitoring and training. It filters security threats and integrates with Outlook easily, making security management simple and effective. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Priti S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Priti S.") PS Priti S. Co-Founder Consulting Mid-Market (51-1000 emp.) 2/12/2024 "Email and collaboration security company" 4/5 What do you like best about Mimecast Advanced Email Security? As a user of Mimecast Cloud Archive, I really appreciate the ease of use and accessibility it provides. I can quickly search through my old emails and find what I need, even on my mobile device. This has saved me a lot of time and frustration. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? Mimecast Cloud Archive is a great tool for storing old emails, but it can be slow and clunky to search through them. I would also prefer to be able to access my archived emails directly from my inbox, rather than having to log in to the web interface. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? As a user of Mimecast Cloud Archive, I've been impressed by its ability to simplify e-Discovery and streamline my IT environment. It's given me peace of mind knowing that my data is never lost and can be quickly restored if needed. Review collected by and hosted on G2.com. Show More 12/31/2025 Validated ReviewerIncentivizedSource: G2 invite ![Igor B.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Igor B.") IB Igor B. Customer engineer Mid-Market (51-1000 emp.) 11/18/2025 "Mimecast, a Great Mail security tool" 4/5 What do you like best about Mimecast Advanced Email Security? The features that stand out most are its Targeted Threat Protection, and the ease of use it provides. The TTP suite is excellent at neutralizing most attacks, including Impersonation Protection which accurately flags and blocks Business Email Compromise and CEO fraud attempts that traditional filters miss. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? At times, the Administration user interface tends to be slow and unresponsive, which can be frustrating. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Targeted Threat Protection: Features like Impersonation Protection and advanced AI/machine learning stop social engineering attacks that manipulate employees. This directly translates to reduced financial loss and prevented breaches from wire transfer fraud or credential theft Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Jaylen J.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Jaylen J.") JJ Jaylen J. Design Intern Mid-Market (51-1000 emp.) 4/21/2026 "Highly Effective Spam Email Targeting" 5/5 What do you like best about Mimecast Advanced Email Security? the ability to target emails that are spam Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? sometimes it doesnt get all the spam emails Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? incoming traffic management Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Organic ## Questions about Mimecast Advanced Email Security? Ask real users or explore answers from the community Get practical answers, real workflows, and honest pros and cons from the G2 community or share your insights. [ Ask about Mimecast Advanced Email Security ](https://www.g2.com/products/mimecast-advanced-email-security/discussions/new) ![Allen S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Allen S.") AS Allen Snook • Last activity about 1 year ago Has anyone implemented ingesting the Audit logs from Mimecast into Graylog? 1 Upvote 3 [ Join the conversation ](https://www.g2.com/discussions/has-anyone-implemented-ingesting-the-audit-logs-from-mimecast-into-graylog) GU Guest User • Last activity about 1 year ago What is Mimecast Email Security with Targeted Threat Protection used for? 0 Upvotes 2 [ Join the conversation ](https://www.g2.com/discussions/what-is-mimecast-email-security-with-targeted-threat-protection-used-for) [ View all Discussions ](https://www.g2.com/products/mimecast-advanced-email-security/discuss) ## Pricing Insights Averages based on real user reviews. ### Time to Implement 2 months ### Return on Investment 12 months ### Average Discount 9% [ View More Pricing Information ](https://www.g2.com/products/mimecast-advanced-email-security/pricing) Mimecast Advanced Email Security Comparisons ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_4e2b08dd17397bdc99a5658447cbc589/microsoft-microsoft-defender-for-office-365.jpg "Product Avatar Image") Microsoft Defender for... 4.5/5(299) [ Compare Now ](https://www.g2.com/compare/microsoft-microsoft-defender-for-office-365-vs-mimecast-advanced-email-security) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_f9b90f9d8d4e2cbdf787403ec274b32f/proofpoint-core-email-protection.jpg "Product Avatar Image") Proofpoint Core Email... 4.6/5(601) [ Compare Now ](https://www.g2.com/compare/mimecast-advanced-email-security-vs-proofpoint-core-email-protection) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_b00eebb9d7957901dc4176f594f678a9/spamtitan-email-security.jpg "Product Avatar Image") SpamTitan Email Security 4.5/5(199) [ Compare Now ](https://www.g2.com/compare/mimecast-advanced-email-security-vs-spamtitan-email-security) ##### ##### Mimecast Advanced Email Security Features Administration Email Clients Role-Based Rules Security Anti-Malware/Anti-Spam Quarantine Anti-Phishing Protection Policy Enforcement Spam Filtering Functionality Anti-Spam Anti-Malware Anti-Phishing [ View More Features ](https://www.g2.com/products/mimecast-advanced-email-security/features) ## Top-Rated Alternatives [ ![Proofpoint Core Email Protection](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Proofpoint Core Email Protection") Proofpoint Core Email Protection 4.6/5(601) ](https://www.g2.com/products/proofpoint-core-email-protection/reviews) [ ![SpamTitan Email Security](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "SpamTitan Email Security") SpamTitan Email Security 4.5/5(199) ](https://www.g2.com/products/spamtitan-email-security/reviews) [ ![Cloudflare One (SASE)](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Cloudflare One (SASE)") Cloudflare One (SASE) 4.6/5(105) ](https://www.g2.com/products/cloudflare-one-sase/reviews) [ View All Alternatives ](https://www.g2.com/products/mimecast-advanced-email-security/competitors/alternatives) ##### Categories on G2 [Cloud Email Security](https://www.g2.com/categories/cloud-email-security)[Intelligent Email Protection](https://www.g2.com/categories/intelligent-email-protection)[Secure Email Gateway](https://www.g2.com/categories/secure-email-gateway) [Cloud Email Security](https://www.g2.com/categories/cloud-email-security)[Intelligent Email Protection](https://www.g2.com/categories/intelligent-email-protection)[Secure Email Gateway](https://www.g2.com/categories/secure-email-gateway)[Browser Isolation](https://www.g2.com/categories/browser-isolation) [Show MoreShow Less](javascript:void(0);) ##### Explore More [What is the most affordable media targeting solution for small teams?](https://www.g2.com/discussions/what-is-the-most-affordable-media-targeting-solution-for-small-teams)[Best ATS app for recruiting in software industry](https://www.g2.com/discussions/best-ats-app-for-recruiting-in-the-software-industry)[Which companies in the Salesforce document generation space are known for the best customer support when something breaks on a critical deal?](https://www.g2.com/discussions/which-companies-in-the-salesforce-document-generation-space-are-known-for-the-best-customer-support-when-something-breaks-on-a-critical-deal) [Ideal relational database for fast-growing businesses](https://www.g2.com/discussions/what-is-the-ideal-relational-database-for-fast-growing-businesses)[Which scientific data management systems include integrated laboratory notebook features for enterprise buyers assessing total cost of ownership?](https://www.g2.com/discussions/which-scientific-data-management-systems-include-integrated-laboratory-notebook-features-for-enterprise-buyers-assessing-total-cost-of-ownership%20)[Pros and Cons Details](https://www.g2.com/products/mimecast-advanced-email-security/reviews?qs=pros-and-cons) [Show MoreShow Less](javascript:void(0);)