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Microsoft Purview Customer Lockbox vs Proofpoint Email Protection comparison

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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:
 

Categories and Ranking

Microsoft Purview Customer ...
Ranking in Office 365 Protection
7th
Average Rating
9.0
Reviews Sentiment
7.9
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Proofpoint Email Protection
Ranking in Office 365 Protection
1st
Average Rating
8.4
Reviews Sentiment
6.7
Number of Reviews
111
Ranking in other categories
Email Security (1st), Advanced Threat Protection (ATP) (2nd), Digital Risk Protection (3rd), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of October 2026, in the Office 365 Protection category, the mindshare of Microsoft Purview Customer Lockbox is 2.7%, up from 1.0% compared to the previous year. The mindshare of Proofpoint Email Protection is 24.3%, up from 21.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Office 365 Protection Mindshare Distribution
ProductMindshare (%)
Proofpoint Email Protection24.3%
Microsoft Purview Customer Lockbox2.7%
Other73.0%
Office 365 Protection
 

Featured Reviews

Mayeen Uddin - PeerSpot reviewer
Officer at SFIL
Dashboard functionality and data processing offer value with an easy setup
We are using Microsoft Purview Customer Lockbox for email access The most important feature is data processing. I like the dashboard and the undo or multi-call feature of Microsoft Purview Customer Lockbox. The pricing for personal users is not cost-effective. It feels expensive for individual…
Siva_Prasad - PeerSpot reviewer
Senior Consultant at a tech vendor with 10,001+ employees
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.

Quotes from Members

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

Pros

"The most important feature is data processing, and I like the dashboard and the undo or multi-call feature of Microsoft Purview Customer Lockbox."
"The most important feature is data processing."
"Out of these three, no other email gateway can be compared with Proofpoint Email Protection."
"In the pros, we can see strong protection against phishing, spoofing, and malware threats, and good email filtering accuracy and threat visibility."
"The solution offers very good flexibility. You can blacklist or whitelist with ease."
"The most valuable feature is the ability to remove bad messages that were delivered, prior to being classified as unwanted."
"The Tap and Trap features. They are the best features."
"Proofpoint Email Protection has positively impacted my organization because when people know that we are using Proofpoint and they know we have set up a mailbox for protection, they forward issues to that mailbox and we search for them."
"Proofpoint is much more advanced and capable of safeguarding the infrastructure and protecting the customer landscape, specifically from an email and attachment point of view, in day-to-day operations compared to these solutions."
"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."
 

Cons

"The pricing for personal users is not cost-effective. It feels expensive for individual expenses."
"However, for the cons, it requires continuous policy tuning to manage false positives. A Proofpoint Email Protection engineer requires continuous policy tuning to manage false positives, which is a disadvantage."
"The accessibility of Proofpoint Email Protection, particularly access to product trials, could be improved. It's hard to get a trial for Proofpoint Email Protection, and many customers prefer not just to do the POC or demo but try the product out."
"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."
"In terms of improvement, the price could be better. Additionally, more security could be implemented."
"It became very expensive due to the nature of local circumstances, and I may advise Proofpoint to adjust marketing solutions based on each country."
"We'd like to have the ability to create more customized reports."
"The licensing cost of Proofpoint Email Protection is a lot higher than other solutions, such as Barracuda."
"I would like to see improvements in Proofpoint Email Protection's portal as it is sometimes slow."
 

Pricing and Cost Advice

Information not available
"The solution is expensive."
"They are competitively priced, but I have been forced to get quotes for other solutions now because they haven't been responding to requests to do the work that we would like them to do."
"Proofpoint Email Protection has comparable pricing."
"Pricing has recently been increased and the cost is a downside"
"It is expensive."
"Proofpoint Email Protection is a reasonably priced product, which means that it is neither too low nor too high in terms of price."
"Proofpoint is fairly expensive."
"We sell annual licenses for this solution."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
13%
Outsourcing Company
10%
Manufacturing Company
10%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business31
Midsize Enterprise24
Large Enterprise62
 

Questions from the Community

What needs improvement with Microsoft Purview Customer Lockbox?
The pricing for personal users is not cost-effective. It feels expensive for individual expenses.
What is your primary use case for Microsoft Purview Customer Lockbox?
We are using Microsoft Purview Customer Lockbox for email access.
What needs improvement with Proofpoint Email Protection?
To improve Proofpoint Email Protection, I suggest breaking down the URL into one versus three different GUIs. Regarding Proofpoint Email Protection's AI capabilities, I think its governance and sec...
What is your primary use case for Proofpoint Email Protection?
My main use case for Proofpoint Email Protection includes phishing emails, spam, URL isolation, and training. I utilize the email protect portal to ensure that none of our employees in any of the b...
 

Also Known As

No data available
Proofpoint Enterprise Protection, Proofpoint Digital Protection
 

Overview

 

Sample Customers

Information Not Available
Blocket, University of Waterloo, Lincoln Memorial University, WellSpan Health, U-Haul, Carestream Health, Westinghouse
Find out what your peers are saying about Proofpoint, Mimecast, Barracuda Networks and others in Office 365 Protection. Updated: October 2026.
917,433 professionals have used our research since 2012.