--- 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: '2026-08-11' 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 AM Akhil M. Manager Mid-Market (51-1000 emp.) 12/10/2025 "Effortless Spam Blocking and Enhanced Email Security" 5/5 What do you like best about Mimecast Advanced Email Security? it easy to identify unknown email and block spam and avoid breach Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? sometimes it block genuine user and take time Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? it easy to identify unknown email and block spam and avoid breach data leak Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic TK tali k. Threat Intelligence Analyst Enterprise (\> 1000 emp.) 11/18/2025 "Consistent, Low-Noise Phishing Protection with Smart Features" 5/5 What do you like best about Mimecast Advanced Email Security? Consistent, low‑noise protection from phishing and impersonation—smart URL rewriting and attachment sandboxing with clear reporting and simple policy control. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? URL rewriting can break links, the admin UI/reporting feel clunky with limited customization, and quarantine workflows sometimes delay legitimate mail. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? It closes the biggest email gaps—phishing/BEC, spoofing, and malware in links/attachments—by filtering and detecting impersonation before messages reach users. The result is fewer incidents and account takeovers, less SOC/helpdesk noise, faster investigations via centralized reporting/quarantine, better compliance posture, and more confident users. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite MN Mandla N. IT manager Small-Business (50 or fewer emp.) 8/2/2024 "One of the best email security out there" 4.5/5 What do you like best about Mimecast Advanced Email Security? This platform does help with email protection from phishing emails, and it's a great tool in flagging spam emails and blocking it. The ability for administrators to review a suspicious email before allowing it to be delivered to the users is such a great feature Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The URL protection is too aggressive. Sometimes its a legit URL, but the system blocks it. Every once in a while the users are prompted to enroll devcie when they have already did that Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Mimecast helps protect our uers from threats such as stealing of personal information and phising emails. The safer the emails the better for the companies,we wouldnt want to be explosed to attackes like randsomeware Review collected by and hosted on G2.com. Show More 6/16/2025 Current UserValidated ReviewerSource: Organic IS inayat S. Network Administrator | Infrastructure, Network & Cybersecurity Enterprise (\> 1000 emp.) 11/20/2025 "AI-Powered Security with Outstanding Threat Protection" 4.5/5 What do you like best about Mimecast Advanced Email Security? AI-Powered, Multi-Layer Detection Strong Phishing / Impersonation Protection Excellent Spam & Virus Defense Deployment Flexibility Integrated Platform Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? Steep Learning Curve / Complexity Aggressive Out-of-the-Box Settings / False Positives Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Phishing & Spear-Phishing Business Email Compromise (BEC) Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![aqib j.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "aqib j.") AJ aqib j. IT Administrator Mid-Market (51-1000 emp.) 7/7/2025 "Mimecast Advanced Email Security" 5/5 What do you like best about Mimecast Advanced Email Security? Its provide a best securtiy feature to handel internal and external emails. Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? I dont think is there any think which I dislike about this tool because its always help us to incerase security featurs. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Protection against phishing and spear-phishing attacks: It blocks malicious emails and impersonation attempts, reducing the risk of credential theft and fraud. Defense against malware and ransomware: It scans attachments and links to prevent harmful content from reaching users, protecting our systems and data. Spam and graymail filtering: It ensures our mailboxes stay cleaner and employees remain productive by minimizing unwanted or irrelevant emails. Data loss prevention: It helps enforce security policies to prevent sensitive information from being leaked or sent in error. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Adam J.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Adam J.") AJ Adam J. Cyber Security Engineer Mid-Market (51-1000 emp.) 2/14/2025 "Mimecast, the most favoured email gateway" 4.5/5 What do you like best about Mimecast Advanced Email Security? The capabilities. There is a range of features including journaling, staff awareness and the obvious security features. The support team are really helpful and will conduct tenant reviews when requested, to ensure you are getting the most out of the product. There are a wealth of integrations which can bes used also, which helps in automating some of the frequent manual tasks. The service itself is easy to implement and set up, for both on prem and cloud environments Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The product itself can be easy to use, although the settings can be a bit tedious to find, as they can often be found in multiple places Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Mimecast helps to meet our data retention requirements, meaning we are able to retain our digital communications easily with the benefit of being searchable Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ![Verified User in Electrical/Electronic Manufacturing](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Electrical/Electronic Manufacturing") AE Verified User in Electrical/Electronic Manufacturing Enterprise (\> 1000 emp.) 10/1/2025 "Great when we started with them, declined quickly after implementation" 1.5/5 What do you like best about Mimecast Advanced Email Security? Included email signatures in their offering for free as well as the tabbed interface made switching between consoles very easy! Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The product was 'ok' but not the best at catching everything. The real reason for the decline was in support. Getting customer service on the phone during outages was horrible and took entirely too long in a SEV-A scenario. Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? They did an ok job at first at protecting us from threats, however as the time went on it seemed like they were always a step behind the competitors in this space. Review collected by and hosted on G2.com. Show More Validated ReviewerSource: Thank You page AV Andrew V. IT Engineer Small-Business (50 or fewer emp.) 6/17/2025 "Reliable email Secuity For modern Business" 3.5/5 What do you like best about Mimecast Advanced Email Security? The use of Data Loss Presentation which prevents sensitive data leaks is one of the things I like about Mimecast. Mimecast integrates very well with office365 Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? The initial setup is a bit complex, things like Policies and connectors are a bit challenging to get right Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? The most important problem Mimecast is solving is email based Cyber threats such as impersonation attacks ,malware, ransomware as well as phishing Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: G2 invite on behalf of seller PL Patrick L. CIO Mid-Market (51-1000 emp.) 6/30/2025 "Mimecast is awesome for email phishing/spam" 5/5 What do you like best about Mimecast Advanced Email Security? How easy it is to find emails or block them Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? If a emails gets rejected then we would have to allow them then have that user resend the email which can get annoying to the user side resending documents a couple times Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Catching/blocking spam/phishing emails and also blocking users when clicking on a bad sites/link Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic SD Sam D. IT Support Mid-Market (51-1000 emp.) 7/2/2025 "Mimecast our email buddy who doesn't miss" 5/5 What do you like best about Mimecast Advanced Email Security? How many features you can reject/block an email address/domain Review collected by and hosted on G2.com. What do you dislike about Mimecast Advanced Email Security? Messages that are deferred/rejected need to be resent after allowing that email address/domain Review collected by and hosted on G2.com. What problems is Mimecast Advanced Email Security solving and how is that benefiting you? Blocking/deferring emails to a different queue and allowing the user to accept or block that email allows IT to do other task instead of unlocking all emails! Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite on behalf of seller ## 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 [Which tool supports real-time video rendering in the cloud?](https://www.g2.com/discussions/which-tool-supports-real-time-video-rendering-in-the-cloud)[Best customer success software for small tech startups](https://www.g2.com/discussions/what-s-the-best-customer-success-software-for-small-tech-startups)[Virtual Events Solutions](https://www.g2.com/discussions/best-virtual-events-solutions-for-hosting-online-events) [What is the best IT alerting tool for large-scale IT environments?](https://www.g2.com/discussions/what-is-the-best-it-alerting-tool-for-large-scale-it-environments)[Is a dedicated cloud edge security platform worth it for a startup?](https://www.g2.com/discussions/is-a-dedicated-cloud-edge-security-platform-worth-it-for-a-startup)[Pros and Cons Details](https://www.g2.com/products/mimecast-advanced-email-security/reviews?qs=pros-and-cons) [Show MoreShow Less](javascript:void(0);)