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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
5.3
Mimecast Advanced Email Security offers effective protection and reliability, justifying investment despite uncertain breach cost quantification.
Sentiment score
5.0
Proofpoint Email Protection enhances efficiency and threat defense, reducing security incidents and manual workload despite its cost.
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
5.3
Mimecast Advanced Email Security is praised for support responsiveness and efficiency, though some find the responses too generic.
Sentiment score
7.2
Proofpoint Email Protection support is generally reliable but requires improvements in communication and direct engagement for better satisfaction.
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
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
7.0
Mimecast Advanced Email Security is highly scalable, accommodating diverse organizational sizes and seamlessly handling growth and geographic expansion.
Sentiment score
7.3
Proofpoint Email Protection is scalable and flexible for enterprises, though some face costs and integration challenges.
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
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
7.5
Mimecast Advanced Email Security is stable and reliable, despite occasional login issues and rare service interruptions, ensuring user satisfaction.
Sentiment score
8.2
Proofpoint Email Protection is highly regarded for stability, handling high volumes with minimal downtime, ensuring reliable enterprise-level security.
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 needs better support, user experience improvements, cost reduction, and advanced AI integration for effectiveness.
Proofpoint Email Protection requires interface improvements, AI enhancements, pricing adjustments, better integration, and responsive support for an improved user experience.
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 considered costly per user, with Microsoft's similar features often being more affordable.
Proofpoint Email Protection is a premium, costly solution valued for its advanced threat protection and comprehensive security benefits.
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
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 spam filtering, phishing prevention, identity protection, compliance features, and Microsoft 365 integration for robust security.
Proofpoint Email Protection offers advanced threat detection, enhances security, and integrates with SIEM tools to prevent email-based risks.
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
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
5.9
Number of Reviews
44
Ranking in other categories
Email Archiving (2nd), Secure Web Gateways (SWG) (10th)
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) (2nd), Digital Risk Protection (3rd)
 

Mindshare comparison

As of July 2026, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Advanced Email Security is 15.2%, up from 12.0% compared to the previous year. The mindshare of Proofpoint Email Protection is 18.6%, down from 21.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Mindshare Distribution
ProductMindshare (%)
Proofpoint Email Protection18.6%
Mimecast Advanced Email Security15.2%
Other66.2%
Secure Email Gateway (SEG)
 

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.
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 Enterprise12
Large Enterprise18
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?
Our primary use case for Proofpoint Email Protection is to protect the company's email environment from phishing, business email compromise (BEC), malware, ransomware, spam, and other advanced emai...
 

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: June 2026.
903,067 professionals have used our research since 2012.