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Mimecast Advanced Email Security vs Proofpoint Email Protection comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 2, 2026

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
5.7
Mimecast Advanced Email Security effectively blocks threats, offering significant ROI by reducing risks despite support and stability concerns.
Sentiment score
5.0
Proofpoint Email Protection delivers high ROI by reducing phishing incidents, enhancing efficiency, and decreasing security-related workloads and costs.
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
The ideal situation would be to have all these portals combined into one unified dashboard.
Information Security Architect at Loews Hotels
After Proofpoint Email Protection, phishing has been completely eliminated, so it is working very efficiently.
Security Engineer at News Corp
Instead of individually logging into five portals, we can log into one and they all connect as if we had logged into all of them.
SOC at a financial services firm with 201-500 employees
 

Customer Service

Sentiment score
5.1
Mimecast's customer support is generally good with varying feedback on responsiveness, personalization, and reliance on documentation.
Sentiment score
7.2
Proofpoint Email Protection garners mixed reviews for support, praised for efficiency but criticized for communication and solution thoroughness.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Senior Tech. Lead at WE
Mimecast technical support is generally quite good.
Information Security Analyst at Enfield Central Library
They respond properly and try to help wherever they can.
Solution Architect Cybersecurity at Microland Limited
I am familiar with the granular policy control feature of Proofpoint Email Protection, and I find their support excellent for modifying those policies.
Senior Cybersecurity Specialist at a retailer with 10,001+ employees
Even the engineers have been helpful, and if we open a case, they get back to us right away.
Information Security Analyst at a government with 11-50 employees
We always contact them if we need support, whether it's for setting up features or technical support, which is very responsive.
System Administrator at Tutt Bryant Group
 

Scalability Issues

Sentiment score
7.1
Mimecast Advanced Email Security is praised for scalability, efficient user integration, and flexibility, despite minor secure messaging issues.
Sentiment score
7.3
Proofpoint Email Protection excels in scalability, efficiently managing diverse traffic with flexible cloud-based architecture, despite cost and complexity reports.
If Mimecast Email Security introduces API solutions, it will dominate the market.
Email Security Engineer at Logic Infosecurity
From what I've seen from the MSP, it seems quite complicated to manage the configuration itself.
IT Manager at a logistics company with 201-500 employees
Proofpoint is scalable for multi-site organizations with thousands of users.
Products and solutions director at ITVikings
The solution provides a graphical representation and dashboard view showing how many threats are getting blocked on a daily and monthly basis.
Information Technology Team Lead at a manufacturing company with 1,001-5,000 employees
Proofpoint Email Protection is considered to be highly scalable, designed for large enterprises, with a cloud-based architecture that offers an enormous number of options, including multi-organization support and high-volume email handling.
Senior Solution Delivery Lead Cybersecurity at International Olympic Committee – IOC
 

Stability Issues

Sentiment score
7.4
Mimecast Advanced Email Security is stable with minimal issues, occasional downtime, and is generally rated seven to nine out of ten.
Sentiment score
8.2
Proofpoint Email Protection provides high stability and reliability with robust features, minimal downtime, and efficient high-volume handling.
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
If Proofpoint Email Protection has an outage, we are either not receiving emails or not blocking the right threats.
Senior Security Engineer at Cloudflare
Regarding the stability and performance of Proofpoint Email Protection, I have not experienced any crashes, downtimes, or performance issues.
Cyber Security Engineer at a financial services firm with 10,001+ employees
Proofpoint Email Protection is very stable and reliable, as it remains accessible at all times without issues, ensuring that data is available in real time.
Principal Consultant at Infosys
 

Room For Improvement

Mimecast Advanced Email Security struggles with customer support, pricing, UI complexity, filtering flexibility, and lacks API integrations.
Proofpoint users seek improved search, AI, reporting, support, and integrations, with enhanced phishing protection, customization, and cost-effectiveness.
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 older legacy user interface just took a little to work with, and the new unified interface, as it was able to do more and more of the functionality of the old one, the product just got easier and easier to use.
Sr Security Engineer at a comms service provider with 201-500 employees
In addition to the UI improvements, I would appreciate an increase in the speed of the tasks being processed on the pod.
Security Specialist at a leisure / travel company with 10,001+ employees
There are pros and cons to that, but I would suggest maintaining a good balance between security protection and operational impact.
Senior Security Engineer at Cloudflare
 

Setup Cost

Mimecast Advanced Email Security is seen as costly with structured pricing, discounts for annual plans, and higher fees than competitors.
Proofpoint Email Protection is pricier than competitors, but users appreciate its comprehensive security and features justifying the cost.
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
Customers pay around $90,000 yearly for a 1,000-user organization, with the subscription license being the main expense, apart from implementation fees.
Products and solutions director at ITVikings
Given my other experience with other vendors, I think they are a bit on the high end and a bit on the pricey end for the email security functionality that we were using.
Sr Security Engineer at a comms service provider with 201-500 employees
Although it is a bit costly compared to Mimecast, Defender, and Cofense Vision, it is efficient and strong in security, so I do not mind the cost because I will not reduce my security risk.
Senior Solution Delivery Lead Cybersecurity at International Olympic Committee – IOC
 

Valuable Features

Mimecast Advanced Email Security offers comprehensive threat prevention and management tools, integrating seamlessly with Microsoft 365 for enhanced protection.
Proofpoint Email Protection excels in threat detection, management, and integration, enhancing security and reducing workloads with user-friendly tools.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Senior Tech. Lead at WE
One of the most useful features is the threat remediation module, which can be used to remove malicious emails that may have been delivered or manually remove them.
Information Security Analyst at Enfield Central Library
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
Email Security Engineer at Logic Infosecurity
Without Proofpoint Email Protection, most of these emails would have come through, slipped through Exchange, gotten into the user's mailbox, and created a lot of trouble for the organization.
Cyber Security Engineer at IT Naturally
Proofpoint Email Protection has positively impacted my organization by ensuring we are not at risk of a breach through email.
Release lead at a financial services firm with 10,001+ employees
TAP alerts, where Proofpoint Email Protection scans emails and sends alerts, provide the ability to review suspicious emails and validate them in a sandbox environment.
Infrastructure Analyst at a consultancy with 51-200 employees
 

Categories and Ranking

Mimecast Advanced Email Sec...
Ranking in Office 365 Protection
2nd
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.0
Reviews Sentiment
6.0
Number of Reviews
40
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (15th)
Proofpoint Email Protection
Ranking in Office 365 Protection
1st
Ranking in Secure Email Gateway (SEG)
1st
Average Rating
8.4
Reviews Sentiment
6.7
Number of Reviews
106
Ranking in other categories
Email Security (1st), Advanced Threat Protection (ATP) (3rd), Digital Risk Protection (3rd)
 

Mindshare comparison

As of June 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Advanced Email Security is 15.1%, up from 11.7% compared to the previous year. The mindshare of Proofpoint Email Protection is 19.0%, down from 21.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Proofpoint Email Protection19.0%
Mimecast Email and Collaboration Threat Protection15.1%
Other65.9%
Secure Email Gateway (SEG)
 

Featured Reviews

Ravishankar KumarPatel - PeerSpot reviewer
Solution Architect Cybersecurity at Microland Limited
Email defenses have reduced phishing risk and support strong compliance and user awareness
The improvement needed is not necessarily in the product itself, but rather around how other organizations have evolved. The DLP discussion is no longer limited to email; it has gone to border level with companies like Zscaler, Netskope, and Palo Alto giving the complete full-stack SASE setup. When somebody has a SASE setup, then Mimecast Advanced Email Security DLP might not even be needed at a point in time. Mimecast Advanced Email Security needs to improve in this area because they are only focusing on a particular set of problems which is on email and human risk, whereas companies that need a slightly bigger picture will look elsewhere. The second thing is 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. You get a holistic picture. When pushing Mimecast Advanced Email Security to end customers, people are more often saying that they would rather buy XDR from another provider because the story when an analyst sees is complete in terms of what they see, whereas they only get an email story from Mimecast Advanced Email Security. Mimecast Advanced Email Security has to improve there. Companies like Abnormal AI cover more on UEBA and user behavior, and there are many things for Mimecast Advanced Email Security to improve in this area as well. It is less of a technology issue; they are doing very well on email. The conversation for them to have is on how to get into a broader level or how to get a tie-up to become a broader supplier. At least from a service provider landscape, I can say that.
Siva_Prasad - PeerSpot reviewer
Principal Consultant at Infosys
Email defenses have reduced phishing incidents and protect sensitive data across our enterprise
As things are evolving and threats develop in unpredictable ways, Proofpoint must adopt AI solutions and agentic solutions more aggressively and provide them to customers as part of service offerings. Inbuilt AI solutions would add more value and make Proofpoint a more premium choice for customers. With the help of AI solutions, agentic AI, and generative AI capabilities, the product would be more efficient than it currently is. Filtering false positives is highly challenging because it is impossible for humans to identify which emails are genuine and which are spam. Proofpoint should focus more on this area with back-end agents or other tools. Proofpoint should decide which emails are genuine and which are spam so it is not a challenge for end users. When receiving an email, end users should not have to determine whether to respond or not. Proofpoint should not release such spam emails and should strictly block such spam and spoof emails based on connection IPs. Currently, false positives occur in the product, and while this occurs in every product, it is an area where Proofpoint can focus on improving and reducing false positives. One email is enough for an end user to be deceived and lose money, so addressing this area is critical.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Construction Company
8%
Manufacturing Company
6%
Financial Services Firm
13%
Manufacturing Company
10%
Computer Software Company
7%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise11
Large Enterprise14
By reviewers
Company SizeCount
Small Business28
Midsize Enterprise24
Large Enterprise59
 

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 Proofpoint Email Protection?
I am not informed about the pricing, setup costs, or licensing as it is handled by a different team. I come from a technical perspective.
What needs improvement with Proofpoint Email Protection?
For improvement, the dashboard of Proofpoint Email Protection needs some enhancement. Currently, we are using multiple dashboards, and it would be beneficial if everything was integrated. A single ...
What is your primary use case for Proofpoint Email Protection?
In our environment, we are using Proofpoint Email Protection for inbound email protection as a primary gateway, while Microsoft 365 serves as the secondary gateway. In the primary gateway, it scans...
 

Also Known As

Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
Proofpoint Enterprise Protection, Proofpoint Digital Protection
 

Overview

 

Sample Customers

Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Blocket, University of Waterloo, Lincoln Memorial University, WellSpan Health, U-Haul, Carestream Health, Westinghouse
Find out what your peers are saying about Mimecast Advanced Email Security vs. Proofpoint Email Protection and other solutions. Updated: May 2026.
900,125 professionals have used our research since 2012.