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Mimecast Advanced Email Security Reviews

Vendor: Mimecast
4.0 out of 5
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What is Mimecast Advanced Email Security?

Mimecast Advanced Email Security provides essential features like spam filtering, email archiving, and threat remediation, enhancing email protection. Its integration with Microsoft 365 and user-friendly administration console improve usability while blocking phishing and imposter attacks.

Get the Mimecast Advanced Email Security Buyer's Guide and find out what your peers are saying about Mimecast Advanced Email Security, Microsoft Defender for Office 365, Proofpoint Email Protection and more!
Mimecast Advanced Email Security is the #3 ranked solution in top Office 365 Protection solutions and #4 ranked solution in top Secure Email Gateway (SEG) solutions. PeerSpot users give Mimecast Advanced Email Security an average rating of 8.0 out of 10. Mimecast Advanced Email Security is most commonly compared to Microsoft Defender for Office 365: Mimecast Advanced Email Security vs Microsoft Defender for Office 365. Mimecast Advanced Email Security is popular among the large enterprise segment, accounting for 40% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a computer software company, accounting for 14% of all views.
Buyer's Guide
Mimecast Advanced Email Security
January 2026
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Mimecast Advanced Email Security mindshare

Product category:
Secure Email Gateway (SEG)
As of February 2026, the mindshare of Mimecast Advanced Email Security in the Secure Email Gateway (SEG) category stands at 16.5%, up from 11.6% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Mimecast Email Security16.5%
Microsoft Defender for Office 36521.4%
Proofpoint Email Protection20.9%
Other41.2%
Secure Email Gateway (SEG)

PeerResearch reports based on Mimecast Advanced Email Security reviews

TypeTitleDate
CategorySecure Email Gateway (SEG)Feb 4, 2026Download
ProductReviews, tips, and advice from real usersFeb 4, 2026Download
ComparisonMimecast Advanced Email Security vs Microsoft Defender for Office 365Feb 4, 2026Download
ComparisonMimecast Advanced Email Security vs Proofpoint Email ProtectionFeb 4, 2026Download
ComparisonMimecast Advanced Email Security vs Abnormal SecurityFeb 4, 2026Download
Suggested products
TitleRatingMindshareRecommending
Microsoft Defender for Office 3654.221.4%96%60 interviewsAdd to research
Proofpoint Email Protection4.220.9%94%59 interviewsAdd to research
 
 
Key learnings from peers
Last updated Feb 4, 2026

Valuable Features

Mimecast Advanced Email Security is highly rated for its sandboxing, filtering, and integration features. Users appreciate the email archiving, identity protection, spam filtering, and URL inspection capabilities. The admin console and reporting tools are user-friendly. Security features like phishing countermeasures and threat remediation are effective. Mimecast’s technical support and stability receive positive feedback. Its integration with platforms like Microsoft 365 is valuable. Users note scalability and customization as strengths.
  • "I have been satisfied with Mimecast Email Security as a good solution."
  • "Based on overall experience, Mimecast Email Security is the best solution for traditional gateways."
  • "The reviewer gave Mimecast Email Security a rating of 10 out of 10."

Room for Improvement

Mimecast Advanced Email Security needs enhancements in pricing, user interface, and detection accuracy. Improved support and training options are required. The administrative console is cumbersome, complicating user navigation. Malicious email management and filtering need optimization to save time. Installation procedures can become more straightforward. Users express frustration with outbound mail server blocklisting and complex rule management. More AI features, flexibility in filtering, and improved integration options are desired. Addressing these areas will strengthen overall functionality.
  • "Mimecast Email Security is somewhat expensive compared to the competition in the Indian market, and the local presence is lacking as they do not have a local representative currently."
  • "The system is not user-friendly because you have to create policies that are mapped in a dictionary."
  • "We discussed the phishing aspect, the DNS system, and the key rotation."

ROI

Customers find calculating ROI for Mimecast Advanced Email Security challenging due to the speculative nature of potential breach costs. Many users express satisfaction with protection levels, equating it to an electric fence in home security. Opinions vary with some citing minimal value and others emphasizing protection from phishing and external threats. Inquiries about cost and operational efficiency remain, highlighting a need for more data on measurable benefits.

Pricing

Enterprise buyers find Mimecast Advanced Email Security to be an expensive solution, often described as costly or premium. Pricing depends on user licenses with discount options based on organization size. Additional fees apply for advanced support and data extraction from the archival service. Some users receive significant discounts, while others suggest alternative solutions such as Microsoft Defender for similar functionality. Opinions vary from finding the pricing reasonable to viewing it as less competitive compared to alternatives.
  • "The product price is moderate. I rate the pricing a five out of ten."
  • "The solution is expensive."
  • "Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."

Popular Use Cases

Businesses primarily use Mimecast Advanced Email Security for preventing phishing, spam, and malware emails. It provides attachment and URL protection, serves as an email gateway, and filters security threats. Companies use it for compliance, such as HIPAA, ensuring emails adhere to privacy standards. It manages outbound communications, offers archiving, and includes threat detection tools like behavior analysis. Mimecast is also adopted by enterprises to support email security on a large scale while maintaining efficient performance.

Service and Support

Mimecast Advanced Email Security customer support often receives praise for being responsive and informative, though some clients encounter delays unless direct calls are made. Knowledge base resources are useful but occasionally unclear. Many users are content with service plans, yet some note a decline in quality over time. A rating between seven and eight out of ten is common, reflecting general satisfaction despite a desire for faster response times and more direct communication.

Deployment

Many users found Mimecast Advanced Email Security's initial setup straightforward. Some encountered minor complexities requiring specific rule configurations. Others mentioned ease in a cloud setup, often taking one to two days. Support was generally helpful, though some noted the process could be moderately complex depending on expertise and deployment specifics. Setup time varied by organization size and architecture, with larger or multinational companies needing more coordination and potentially longer durations. Overall, users appreciated quick deployment and maintenance simplicity.

Scalability

Mimecast Advanced Email Security is recognized for its scalability, easily supporting varying numbers of users across different organizations. Users experience seamless expansion capabilities, serving both small and large enterprises effectively. Although most feedback highlights its robust scaling, a few have noted occasional issues, particularly with secure messaging. Despite this, many rate its scalability highly, emphasizing its ability to adapt to increasing user demands and organizational growth. Further API integration could enhance its market position.

Stability

Mimecast Advanced Email Security exhibits strong stability. Users find it reliable, with minimal bugs or glitches. Occasional downtimes are noted but rare. The performance is fast and efficient compared to alternatives. Some organizations reported brief issues, such as login difficulties or IP reputation concerns, but these instances are not common. The majority rate the stability between eight and nine out of ten, indicating high satisfaction with its consistent performance.
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Mimecast Advanced Email Security Buyer's Guide for additional reliable information.

Review data by company size

By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise9
By reviewers
By visitors reading reviews
Company SizeCount
Small Business331
Midsize Enterprise212
Large Enterprise355
By visitors reading reviews

Top industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
6%
Comms Service Provider
5%
Government
5%
Insurance Company
5%
Educational Organization
4%
Legal Firm
4%
Retailer
4%
Construction Company
4%
Outsourcing Company
4%
Real Estate/Law Firm
4%
Healthcare Company
3%
Non Profit
3%
University
3%
Performing Arts
3%
Wholesaler/Distributor
2%
Recreational Facilities/Services Company
2%
Media Company
2%
Logistics Company
2%
Transportation Company
2%
Energy/Utilities Company
2%
Hospitality Company
1%
Marketing Services Firm
1%
Renewables & Environment Company
1%
Pharma/Biotech Company
1%
Wellness & Fitness Company
1%

Compare Mimecast Advanced Email Security with alternative products

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Learn more about Mimecast Advanced Email Security

Mimecast Advanced Email Security is an important tool for organizations combating email threats such as phishing and malicious attachments. Acting as a cloud-based email gateway, it delivers threat protection and email archiving while supporting compliance requirements like HIPAA. Features such as URL inspection, identity protection, impersonation policies, and DMARC Analyzer ensure robust security. Despite its comprehensive capabilities, users find pricing high with room for improvement in detection rates and interface simplification. Additionally, blocking flexibility and outbound mail server blocklisting challenges signal areas for enhancement.

What are the key features?
  • Spam Filtering: Effective at blocking spam and maintaining inbox cleanliness.
  • Email Archiving: Provides secure storage of emails for compliance and retrieval.
  • Sandboxing: Safely tests attachments and links before delivery.
  • Threat Remediation: Responds to detected threats swiftly across the network.
  • URL Inspection: Analyzes links for harmful content to prevent phishing.
What benefits can organizations expect?
  • Scalability: Suitable for both large enterprises and smaller clients enhancing network safety.
  • Customization: Offers advanced features tailoring to specific needs.
  • Integration: Seamlessly integrates with Microsoft 365, enhancing operational efficiency.
  • Performance: Reliably prevents malicious threats ensuring email security.

Mimecast Advanced Email Security is deployed across industries like healthcare, finance, and legal sectors where email threats are prevalent. Companies leverage phishing detection, data compliance, and behavior analysis with ease due to its scalable and cloud-based capabilities. Its robust features support enhanced protection and communication integrity.

Mimecast Advanced Email Security was previously known as Mimecast Email Security with Targeted Threat Protection.

Mimecast Advanced Email Security customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group

Related questions

  • 177
Is Defender for Office 365 enough? Or should we be using a product like Mimecast?
  • 19
Which solution do you prefer: IRONSCALES or Mimecast?
  • 167
When evaluating SEG (Secure Email Gateways), what aspect do you think is the most important to look for?
  • 310
Why is SEG (Secure Email Gateways) important for companies?

Product Categories

Product Categories
Secure Email Gateway (SEG)
Office 365 Protection

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Mimecast Advanced Email Security Reviews Summary
Author infoRatingReview Summary
Email Security Engineer at Logic Infosecurity5.0I've used Mimecast Email Security for two years and find it the best traditional email gateway, with strong phishing protection and stability, though its interface is complex and could benefit from improved API integration and user-friendliness.
Senior Security Engineer at ManpowerGroup4.0I use Mimecast Email Security mainly for intercepting phishing attempts. Its AI-driven structure, Abnormal functionality, and targeted threat protection are effective. However, improvements are needed in phishing, DNS, and key rotation. I find it to be cost-effective overall.
Senior Tech. Lead at WE4.0We are conducting a POC to compare Mimecast with other email security solutions. Mimecast effectively blocks phishing and impostor attacks, although it requires improvement in reducing false positives. It offers ROI by mitigating financial risks associated with phishing.
Information Security Analyst at Enfield Central Library4.5I've been using Mimecast Email Security for four years as our primary email gateway, efficiently scanning and removing threats before reaching users. The tool offers valuable insights into email interactions and has no significant areas needing improvement.
Co-Founder & VP-Sales at QuantumShield Technologies LLP4.5I've used Mimecast Email Security for seven months and find its features like archiving and data loss prevention useful. While it's stable and effective, it's pricey in India and lacks local support. I'd rate it nine out of ten.
Managing Director at Conekt Business Group4.0I use Mimecast for email security across my clients, benefiting from its effective spam filtering and email signature features. However, frequent blocklisting of outbound servers has become a concern. Although its ROI is hard to quantify, it's our preferred solution.
Senior IT Specialist at COMMUNITY HEALTH CONNECTIONS INC3.5We are a nonprofit healthcare provider needing HIPAA compliance, and Mimecast assists us by scanning emails for privacy issues, blocking suspicious URLs, and filtering spam. Its HIPAA dictionary is valuable, but the interface is cumbersome and support could improve.
Director, Information Services at Institute of Peace3.5We value Mimecast's content filtering and secure messaging features, but some users feel it's overly restrictive with attachments. As Office 365 E5 users, we're evaluating Mimecast's added value given its similar security features.