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Mimecast Advanced Email Security vs Sublime Security comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
5.3
Mimecast Advanced Email Security offers substantial protection against threats, justifying its cost despite support and stability concerns.
Sentiment score
3.9
Sublime Security boosts ROI by cutting fraud, workload, and costs, streamlining processes, and improving email security and trust.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
Senior Tech. Lead at WE
The ROI which companies see should be able to justify buying Mimecast Advanced Email Security.
Solution Architect Cybersecurity at Microland Limited
Importantly, we didn’t need to hire any additional staff; we were able to absorb this responsibility using our existing team.
Manager Security Operations Center at a educational organization with 10,001+ employees
The ROI comes from reduced phishing risk, faster incident response, and lower operational overhead, making it a very good investment.
DevOps Engineer at Titanslab Inc.
 

Customer Service

Sentiment score
5.3
Mimecast Advanced Email Security offers responsive support, though users suggest enhancements in flexibility and documentation for even better service.
Sentiment score
6.1
Sublime Security's customer service is praised for accessibility, efficiency, technical expertise, and high user satisfaction ratings.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
The customer support for Mimecast Advanced Email Security is excellent.
Manager - EUC at Finthrive
We instantly get customer support from Mimecast Advanced Email Security whenever there is a requirement.
System Engineer II at a media company with 5,001-10,000 employees
We were able to get in touch with the person who constructed the LLM and its agentic aspects relatively quickly to address our questions.
Manager Security Operations Center at a educational organization with 10,001+ employees
I need to take care during configuration, refer to their documentation, and ensure everything is set up correctly to avoid future problems.
Senior Analyst at Toll Holdings Limited
Our customer support has been responsive and technically knowledgeable
DevOps Engineer at Titanslab Inc.
 

Scalability Issues

Sentiment score
7.0
Mimecast Advanced Email Security is highly scalable, seamlessly supporting diverse organizational sizes and large email volumes in cloud environments.
Sentiment score
7.3
Sublime Security scales efficiently, managing large email volumes and threats, supporting organizations of all sizes with cloud-based flexibility.
It handles email flow very smoothly, and we never face any issues with email delivery as our organization grows or email volume increases.
System Engineer II at a media company with 5,001-10,000 employees
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
While our user base remains around 2,200, I believe it can adapt to much larger requirements as needed, based on discussions with others managing larger organizations.
Manager - EUC at Finthrive
Despite nearly doubling the number of mailboxes and adding significantly more detection rules, the service remains just as fast as it was when we first implemented it.
Manager Security Operations Center at a educational organization with 10,001+ employees
It scales well with growing email volume and evolving threat patterns.
DevOps Engineer at Titanslab Inc.
Sublime Security's scalability is impressive, accommodating organizations of various sizes and capable of handling growth effortlessly.
SOC Analyst L2 at a tech services company with 51-200 employees
 

Stability Issues

Sentiment score
7.5
Mimecast Advanced Email Security is highly stable, reliable, and efficient, despite occasional downtime and login issues.
Sentiment score
8.6
Sublime Security ensures reliable performance, efficient file management, and high user satisfaction with minimal maintenance and zero downtime.
They confirm it's a good solution where only one or two rare emails get through, while the rest are properly blocked without any issues.
Email Security Engineer at Logic Infosecurity
The issues we did have were causing quite a lot of problems.
IT Manager at a logistics company with 201-500 employees
Mimecast Advanced Email Security is a good product and is very stable.
Solution Architect Cybersecurity at Microland Limited
Sublime Security acted quickly; once Microsoft alerted Outlook about the incoming email, Sublime Security managed to pull it from the stream before it had a chance to appear in the user's inbox.
Manager Security Operations Center at a educational organization with 10,001+ employees
Sublime Security is stable, with minimal maintenance times and high reliability, experiencing very few downtimes.
SOC Analyst L2 at a tech services company with 51-200 employees
I have not faced any lagging, crashing, or downtime issues.
Senior Analyst at Toll Holdings Limited
 

Room For Improvement

Mimecast Advanced Email Security needs better support, interface, accuracy, simplified admin features, competitive pricing, and enhanced phishing detection.
Sublime Security needs mature teams for optimization, better executive reporting, and enhanced integration, documentation, and analytics for user benefit.
When you buy an XDR provider, they give you a complete holistic story around it, showing what has happened, which email somebody has clicked on, whether there have been any changes, and whether there is any network activity.
Solution Architect Cybersecurity at Microland Limited
A lot of emails were missed despite being known samples.
Senior Tech. Lead at WE
Mimecast Email Security is somewhat expensive compared to the competition in the Indian market.
Co-Founder & VP-Sales at QuantumShield Technologies LLP
The product is already strong from a detection perspective, and most improvements should focus on reporting, automation, and broader integration.
DevOps Engineer at Titanslab Inc.
While they do provide API-level access and web hooks, I believe more out-of-the-box integrations with SOAR platforms and SIEM tools would enhance Sublime's value.
Manager Security Operations Center at a educational organization with 10,001+ employees
One breach could potentially put a small company out of business, so having a tool such as this might save them from that fate.
Partner Account Manager at a wholesaler/distributor with 51-200 employees
 

Setup Cost

Mimecast Advanced Email Security is costly, with some users valuing its ROI, while others find it non-competitive.
Sublime Security is cost-effective and reliable, with competitive AWS pricing and minimal maintenance costs despite a required subscription.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Senior Tech. Lead at WE
Regarding the price, I think that in terms of similar products, it is pretty much in the same line, so I think it's reasonable.
IT Manager at a logistics company with 201-500 employees
Overall, my experience with pricing, setup costs, and licensing was smooth.
Manager - EUC at Finthrive
It's competitive with its peers, especially for the number of mailboxes we have.
Manager Security Operations Center at a educational organization with 10,001+ employees
Sublime Security has totaled approximately 60 to 70,000 malicious emails prevented over the 10 to 11 months we have used it.
DevOps Engineer at Titanslab Inc.
I noticed that Sublime Security was slightly more expensive than Avanan or Defender.
SOC Analyst L2 at a tech services company with 51-200 employees
 

Valuable Features

Mimecast offers comprehensive email security with phishing prevention, sandboxing, and seamless Microsoft 365 integration, ensuring robust threat protection.
Sublime Security enhances phishing protection with AI-driven detection, customizable rules, and seamless integration, reducing incidents and costs.
There was a signature phishing scam on the internet, but Mimecast Advanced Email Security caught it before it came to fruition and instantly blocked that signature-based phishing scam.
System Engineer II at a media company with 5,001-10,000 employees
It easily generates reports about the kinds of emails coming in weekly and classifies them into various categories, making it very helpful to analyze and ensure our email gateway remains safe and secure by updating all security patches.
Senior Managing Consultant at a tech vendor with 10,001+ employees
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
This level of detail is essential for analysts and anyone conducting evaluations, as it helps them understand the specific circumstances of their environment.
Manager Security Operations Center at a educational organization with 10,001+ employees
It adds a smarter layer that catches anything missed by Microsoft 365 or Google Workspace protection.
Partner Account Manager at a wholesaler/distributor with 51-200 employees
The detection engine has made the biggest difference because it catches sophisticated phishing attempts that traditional email security sometimes misses.
DevOps Engineer at Titanslab Inc.
 

Categories and Ranking

Mimecast Advanced Email Sec...
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
44
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (10th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
Sublime Security
Average Rating
9.0
Reviews Sentiment
6.5
Number of Reviews
7
Ranking in other categories
Email Security (18th)
 

Mindshare comparison

While both are Messaging and Collaboration solutions, they serve different purposes. Mimecast Advanced Email Security is designed for Secure Email Gateway (SEG) and holds a mindshare of 15.2%, up 12.0% compared to last year.
Sublime Security, on the other hand, focuses on Email Security, holds 1.4% mindshare, down 1.6% since last year.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security15.2%
Proofpoint Email Protection18.6%
Microsoft Defender for Office 36515.3%
Other50.900000000000006%
Secure Email Gateway (SEG)
Email Security Mindshare Distribution
ProductMindshare (%)
Sublime Security1.4%
Proofpoint Email Protection6.7%
Microsoft Defender for Office 3656.1%
Other85.8%
Email Security
 

Featured Reviews

Avinash Mishra - PeerSpot reviewer
Manager - EUC at Finthrive
Advanced email filtering has blocked massive spam volumes and prevents unauthorized data leaks
Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts. Streamlining this could improve overall usability and security management for users. Reporting is another area needing improvement in Mimecast Advanced Email Security, as the reports provided are not very easy to decipher. With artificial intelligence being integrated into various tools including Mimecast Advanced Email Security, I believe there is potential to enhance functionality, enabling users to ask specific questions and retrieve concise answers instead of overwhelming data. I choose a nine for Mimecast Advanced Email Security because improvements such as better user interface and artificial intelligence integration features would greatly enhance its usability. While no tool is perfect, these adjustments could greatly elevate Mimecast Advanced Email Security's capabilities.
reviewer2764257 - PeerSpot reviewer
Manager Security Operations Center at a educational organization with 10,001+ employees
Improves decision-making with clear verdict explanations and works well across multiple environments
I know that a lot of time has been invested in improving the efficacy of the platform, and it shows; it performs very well. Moving forward, I think our focus should be on how to achieve better integration with other systems. While they do provide API-level access and web hooks, I believe more out-of-the-box integrations with SOAR platforms and SIEM tools would enhance Sublime's value. This would allow it to be integrated more closely with the workflows of various teams and could potentially increase its market appeal. From my perspective, the tool itself functions exceptionally well, which gives me confidence in the system. I want to see this functionality extend to other tools that I use, enabling faster automation and improved workflows for the team, particularly from a security operations standpoint. I have no critiques regarding the tool itself. They've done an outstanding job and are maintaining high quality throughout their development process. They have a great product, and it's essential that they continue to uphold that standard, even though it requires significant effort.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Construction Company
8%
Outsourcing Company
7%
Outsourcing Company
10%
Computer Software Company
10%
Financial Services Firm
10%
Marketing Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise18
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise4
Large Enterprise3
 

Questions from the Community

What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is room for improvement since new threats are emerging. Considering the availability of new features would be worthwhile. Mimecast Email Security is somewhat expensive compared to the competi...
What is your experience regarding pricing and costs for Sublime Security?
The pricing or setup cost or licensing that they are offering for us is not my scope; it is someone else working with them in terms of pricing. As far as I know, they are not expensive and their pr...
What needs improvement with Sublime Security?
I would say there are very minimal changes needed regarding Sublime Security; for first-time users, it can be difficult knowing how to write the tool. Having some templates available would improve ...
What is your primary use case for Sublime Security?
My main use case for Sublime Security is to test how this product works, so I am using this for that purpose. For a quick specific example of what I tested with Sublime Security, it detects the ema...
 

Also Known As

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
No data available
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Snowflake, Spotify, Anduril, Elastic, Compass, Encompass Health, Zscaler, Ovo Energy, Personio, Beneteler 
Find out what your peers are saying about Proofpoint, Microsoft, Mimecast and others in Secure Email Gateway (SEG). Updated: July 2026.
904,973 professionals have used our research since 2012.