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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 September 2026, in the Office 365 Protection category, the mindshare of Microsoft Purview Customer Lockbox is 2.5%, up from 1.1% compared to the previous year. The mindshare of Proofpoint Email Protection is 24.2%, up from 21.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Office 365 Protection Mindshare Distribution
ProductMindshare (%)
Proofpoint Email Protection24.2%
Microsoft Purview Customer Lockbox2.5%
Other73.3%
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."
"The most valuable feature of Proofpoint Email Protection is the blocking capabilities, it blocks a lot of potential threats."
"Proofpoint Email Protection has positively impacted my overall security posture, making it easier for users to encrypt files right in the portal and send them to customers, and it is simple for customers to access those files without difficulty."
"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."
"It's very good at identifying threats."
"URL scanning and online relay service are the most valuable features of Proofpoint Email Protection."
"Proofpoint Email Protection has increased the efficiency of the organization, as before a single end user might be receiving fifteen, twenty, or thirty spam emails in a week, but with Proofpoint Email Protection, they have decreased by approximately eighty percent, so users are receiving many fewer spam emails and do not have to go through all the spam emails just to verify if they are legitimate or not."
"Overall, we've been happy with the product and the results we've gotten."
 

Cons

"The pricing for personal users is not cost-effective. It feels expensive for individual expenses."
"To improve Proofpoint Email Protection, I suggest breaking down the URL into one versus three different GUIs."
"The solution's server console and cluster dashboard have been the same for four years so need to be upgraded."
"I rate the technical support at a 3 out of 10, with 10 being the best."
"Proofpoint Email Protection's interface is confusing and could be improved."
"Proofpoint Email Protection needs to enhance its capabilities for AI-related threats as it is primarily a rule-based solution."
"We find the cost to be prohibitive."
"Proofpoint Email Protection has a lot of false positives, and the infrastructure is a bit complex."
"There is room for improvement in detecting and preventing phishing attacks. While the solution performs well in some aspects, it struggles with phishing threats."
 

Pricing and Cost Advice

Information not available
"Pricing has recently been increased and the cost is a downside"
"The end customer is buying our solution, which can be for monthly or annual usage depending on our payment and business model."
"Clients pay for an annual subscription of Proofpoint Email Protection. Every client always finds it 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."
"I rate the price of Proofpoint Email Protection a four out of five."
"I rate the product price a seven on a scale of one to ten, where one is low price and ten is high price."
"The licensing cost of Proofpoint Email Protection is a lot higher than other solutions, such as Barracuda."
"Proofpoint Email Protection has comparable pricing."
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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 Business30
Midsize Enterprise25
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, Sophos and others in Office 365 Protection. Updated: September 2026.
914,262 professionals have used our research since 2012.