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Mimecast Email Security vs Proofpoint Email Protection comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 15, 2025

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
6.0
Mimecast Email Security effectively prevents phishing, enhancing security and providing significant protection despite challenges in quantifying ROI.
Sentiment score
6.5
Proofpoint Email Protection effectively reduced threats and costs, excelling in phishing defense, leading to significant efficiency improvements.
There is definitely a return on investment when using Mimecast, as it blocks phishing emails, reducing the risk of significant financial losses.
 

Customer Service

Sentiment score
6.0
Mimecast Email Security's customer service is mixed, with responsiveness praised by some, but issues with waiting times noted by others.
Sentiment score
7.1
Proofpoint Email Protection's customer service is praised for responsiveness and expertise, though some report slow responses or portal issues.
Support personnel are hesitant to engage in remote sessions, preferring to share documentation via email.
Mimecast technical support is generally quite good.
I would rate my experience with technical support of Mimecast Email Security between seven and eight out of ten for their support.
I am familiar with the granular policy control feature of Proofpoint Email Protection, and I find their support excellent for modifying those policies.
 

Scalability Issues

Sentiment score
7.2
Mimecast Email Security is a scalable SaaS solution, praised for flexibility and effectiveness across various organization sizes and industries.
Sentiment score
7.5
Proofpoint Email Protection excels in adaptability and scalability, serving both small and large enterprises with ease and flexibility.
If Mimecast Email Security introduces API solutions, it will dominate the market.
Proofpoint is scalable for multi-site organizations with thousands of users.
 

Stability Issues

Sentiment score
7.5
Mimecast Email Security is generally stable and reliable, with rare bugs, occasional minor issues, and minimal downtime reported.
Sentiment score
8.2
Users rate Proofpoint Email Protection highly for reliability and performance, with minor UI challenges and rare stability issues.
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.
 

Room For Improvement

Mimecast Email Security requires pricing, detection, user interface improvements, better support, and enhanced AI integration for smoother operations.
Proofpoint Email Protection struggles with setup complexity, feature enhancements, pricing issues, and requires improved support and interface design.
A lot of emails were missed despite being known samples.
Mimecast Email Security can be improved by adding some API integrations.
We discussed the phishing aspect, the DNS system, and the key rotation.
Proofpoint could expand its phishing detection capabilities to improve its efficiency.
More security could be implemented.
I believe they still need to improve by consolidating some portals, as currently, you have to log in separately to a few of them.
 

Setup Cost

Mimecast Email Security offers comprehensive features but is considered premium, with variable pricing flexibility and additional support costs.
Proofpoint Email Protection is considered costly, with pricing starting at $8 per user and varying by features.
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
Customers pay around $90,000 yearly for a 1,000-user organization, with the subscription license being the main expense, apart from implementation fees.
Additional costs do come in, but it enhances security.
 

Valuable Features

Mimecast Email Security offers strong threat protection, seamless Microsoft 365 integration, and user-friendly features for comprehensive email threat mitigation.
Proofpoint Email Protection offers advanced threat defense, user-friendly interface, and seamless Office 365 integration for comprehensive email security.
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.
A distinct advantage of Mimecast is its ability to block phishing and impostor attacks, which are significant threats currently.
Mimecast Email Security includes the best gateway solution across all Cisco, Trend Micro, and other solutions.
I appreciate that it's the industry leader, and its firewalling is very easy to manage and implement.
The most beneficial feature of Proofpoint Email Protection is mostly spam filtering; it was very efficient, and we were very happy with the functionality as only relevant emails were allowed for mailboxes.
The main feature I find most effective is that Proofpoint Email Protection scans emails and quarantines the doubtful ones.
 

Categories and Ranking

Mimecast Email Security
Ranking in Office 365 Protection
3rd
Ranking in Secure Email Gateway (SEG)
4th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
31
Ranking in other categories
No ranking in other categories
Proofpoint Email Protection
Ranking in Office 365 Protection
2nd
Ranking in Secure Email Gateway (SEG)
3rd
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
53
Ranking in other categories
Email Security (3rd), Security Awareness Training (2nd), Digital Risk Protection (3rd)
 

Mindshare comparison

As of October 2025, in the Secure Email Gateway (SEG) category, the mindshare of Mimecast Email Security is 12.5%, down from 15.0% compared to the previous year. The mindshare of Proofpoint Email Protection is 21.0%, up from 18.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Secure Email Gateway (SEG) Market Share Distribution
ProductMarket Share (%)
Proofpoint Email Protection21.0%
Mimecast Email Security12.5%
Other66.5%
Secure Email Gateway (SEG)
 

Featured Reviews

Frank Rawson - PeerSpot reviewer
It gives clients peace of mind and helps them educate their users about threats
A few years ago, our team found the implementation to be somewhat challenging. It has gotten easier as we've grown more experienced. The difficulty depends on the expertise of the person doing it. I don't work with Mimecast every day, so it might be more difficult for me than it is for one of my techs who regularly does Mimecast implementations. It requires some specific in-depth product knowledge and an understanding of email solutions. The deployment time varies. In South Africa, it depends on who you use to deploy it. If you use one of Mimecast's local partners, it can take up to two weeks because of their process. However, it's only about four to eight hours of work. After deployment, there isn't much maintenance aside from supporting and educating your customers. Users require constant education on how to use the Mimecast client and release an email that has been blocked.
AhmedRamadan - PeerSpot reviewer
Optimize email security with effective sandboxing and auto Pull for quarantine
Proofpoint is used as an email security gateway for big enterprises, primarily for their on-premises servers. Many customers also use it alongside Office 365 Proofpoint offers a complete solution for email security with features like DLP, email archiving, and encryption. The most valuable…
report
Use our free recommendation engine to learn which Secure Email Gateway (SEG) solutions are best for your needs.
868,787 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
7%
Manufacturing Company
7%
Comms Service Provider
6%
Computer Software Company
14%
Financial Services Firm
10%
Manufacturing Company
8%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise7
Large Enterprise11
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise13
Large Enterprise17
 

Questions from the Community

What do you like most about Mimecast Email Security with Targeted Threat Protection?
The interface of this solution is very easy to navigate and user-friendly. There is no delivery in email and other communications, making it reliable. The configuration is relatively easy.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
Mimecast Email Security can be improved by adding some API integrations. Instead of remaining a traditional gateway, Mimecast Email Security needs to provide API solutions similar to Check Point.
What is your experience regarding pricing and costs for Proofpoint Email Protection?
In terms of pricing, it is okay compared to others. I would say it is normal. Additional costs do come in, but it enhances security.
What needs improvement with Proofpoint Email Protection?
I believe they still need to improve by consolidating some portals, as currently, you have to log in separately to a few of them.
 

Also Known As

Mimecast Email Security with Targeted Threat Protection
Proofpoint Enterprise Protection, Cofense PhishMe, 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 Email Security vs. Proofpoint Email Protection and other solutions. Updated: September 2025.
868,787 professionals have used our research since 2012.