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Microsoft Purview Customer Lockbox vs Mimecast Email Security comparison

 

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
Mimecast Email Security
Ranking in Office 365 Protection
4th
Average Rating
8.0
Reviews Sentiment
6.2
Number of Reviews
30
Ranking in other categories
Secure Email Gateway (SEG) (4th)
 

Mindshare comparison

As of June 2025, in the Office 365 Protection category, the mindshare of Microsoft Purview Customer Lockbox is 2.1%, down from 2.2% compared to the previous year. The mindshare of Mimecast Email Security is 19.1%, up from 10.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Office 365 Protection
 

Featured Reviews

Mayeen Uddin - PeerSpot reviewer
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…
ShaheenKapery - PeerSpot reviewer
Provides valuable security features and has a straightforward setup process
The initial setup process is straightforward and takes a weekend at most. A .com domain can take up to forty-eight hours, while a local domain takes about four to eight hours because it has to propagate through the international DNS records. It is a cloud-only solution. If you're managing email security on-premises, you use your bandwidth to download emails, including spam, and then use your servers to clean it up. For example, say a third of your email is spam; this consumes significant bandwidth and resources. However, if you use Mimecast, they filter the emails on their servers before delivering them to you. It can be a major selling point in regions with expensive bandwidth, such as Africa. You can save bandwidth and improve overall efficiency by offloading the spam filtering to Mimecast.

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."
"Email security is the most valuable feature of the solution."
"URL inspection works pretty well."
"The product is good. To date, we have not faced any challenges."
"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."
"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
"The most valuable feature is the DMARC Analyzer."
"It does a good job for us, and its admin console is easy to use."
"The setup was easy."
 

Cons

"The pricing for personal users is not cost-effective."
"Mimecast need to ensure that the body text format is correctly handled and that images are properly embedded in the body text."
"I'd like to have better support from the product in the future."
"We have subscribed to an archival service, and yet, when we have to get our data out, we have to pay a fee to get our own data. They charge an extraction fee."
"As a user, the user interface of the management console could be upgraded, for example."
"The solution is complex and not easy to use."
"The product's interface could be improved to be more user-friendly."
"Mimecast needs to reduce the number of false positive emails; a big pain point for us."
"The feature that should be included is to remove the block on the encrypted files."
 

Pricing and Cost Advice

Information not available
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."
"It is a bit expensive."
"The product price is moderate. I rate the pricing a five out of ten."
"The product has good pricing in terms of return on investment."
"I'm always going to say the price needs to be lower, but it's reasonable."
"It's an expensive solution."
"The solution is expensive."
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Top Industries

By visitors reading reviews
No data available
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
7%
Comms Service Provider
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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 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 is your experience regarding pricing and costs for Mimecast Email Security with Targeted Threat Protection?
The pricing is higher for Mimecast, particularly for the Indian market, where it is considered expensive.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is nothing that notably stands out in need of improvement at present.
 

Also Known As

No data available
Mimecast Email Security with Targeted Threat Protection
 

Overview

 

Sample Customers

Information Not Available
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Find out what your peers are saying about Sophos, Proofpoint, TitanHQ and others in Office 365 Protection. Updated: June 2025.
856,873 professionals have used our research since 2012.