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Mimecast Advanced Email Security Room for Improvement

Avinash Mishra - PeerSpot reviewer
Avinash Mishra
Manager - EUC at Finthrive

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.

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Ravishankar KumarPatel - PeerSpot reviewer
Ravishankar KumarPatel
Solution Architect Cybersecurity at Microland Limited

The improvement needed is not necessarily in the product itself, but rather around how other organizations have evolved. The DLP discussion is no longer limited to email; it has gone to border level with companies like Zscaler, Netskope, and Palo Alto giving the complete full-stack SASE setup. When somebody has a SASE setup, then Mimecast Advanced Email Security DLP might not even be needed at a point in time. Mimecast Advanced Email Security needs to improve in this area because they are only focusing on a particular set of problems which is on email and human risk, whereas companies that need a slightly bigger picture will look elsewhere.

The second thing is 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. You get a holistic picture. When pushing Mimecast Advanced Email Security to end customers, people are more often saying that they would rather buy XDR from another provider because the story when an analyst sees is complete in terms of what they see, whereas they only get an email story from Mimecast Advanced Email Security. Mimecast Advanced Email Security has to improve there. Companies like Abnormal AI cover more on UEBA and user behavior, and there are many things for Mimecast Advanced Email Security to improve in this area as well.

It is less of a technology issue; they are doing very well on email. The conversation for them to have is on how to get into a broader level or how to get a tie-up to become a broader supplier. At least from a service provider landscape, I can say that.

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reviewer2860761 - PeerSpot reviewer
reviewer2860761
System Engineer II at a media company with 5,001-10,000 employees

Regarding how Mimecast Advanced Email Security can be improved, I think Mimecast Advanced Email Security is continuously improving email security, but I would like them to include a feature as soon as possible that detects when someone spoofs the display name. If my name is ABC, then someone could use the ABC name and send the email to a user. If that email ID is not from Cimpress, it should create some warning indicating this is an external email, not from your company.

I have no additional comments about the needed improvements. Everything is pretty good. What we pay and what we get from Mimecast Advanced Email Security is really good, with no issues.

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Buyer's Guide
Mimecast Advanced Email Security
June 2026
Learn what your peers think about Mimecast Advanced Email Security. Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
903,118 professionals have used our research since 2012.
HS
Test Logix
Email Security Engineer at Logic Infosecurity

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.

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reviewer2861040 - PeerSpot reviewer
reviewer2861040
Senior Managing Consultant at a tech vendor with 10,001+ employees

Mimecast Advanced Email Security can be improved by integrating artificial intelligence to process emails more effectively, providing summaries that would be substantially helpful. The user interface is good as it is, so I have nothing much to add regarding improvements.

The accuracy of Mimecast Advanced Email Security is good, but I cannot solely rely on AI accuracy for actions, as AI is not infallible. It analyzes patterns but sometimes overlooks suspicious indicators. While Mimecast Advanced Email Security uses a precautionary method to block emails, the process is good but still requires fine-tuning based on user experience.

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MP
Maciej Piaskowy
Senior Security Engineer at ManpowerGroup

If I ask you about the room for improvement, we discussed the phishing aspect, the DNS system, and the key rotation. Apart from that, are there any other areas that you would like to see improved or enhanced in the Mimecast Email Security?

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reviewer2500197 - PeerSpot reviewer
reviewer2500197
IT Manager at a logistics company with 201-500 employees

Allow modification of potentially dangerous hyperlinks to be converted into either text or image instead of rejecting the message.

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AS
Aarsh Shukla
Technical Consultant Professional Services at a tech vendor with 10,001+ employees

Mimecast Advanced Email Security is all good, but if we can include AI, it will be really good.

Regarding Mimecast Advanced Email Security's AI capabilities, my thoughts on its governance and security are that security is always the first priority of Mimecast, so we basically do not share our data with the AI; we are just improving some filters.

As for the accuracy and reliability of output, I find the accuracy of Mimecast Advanced Email Security to be good.

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RP
Raghav Pandey
Senior Tech. Lead at WE

Mimecast needs to reduce the number of false positive emails; a big pain point for us. A lot of emails were missed despite being known samples. This needs improvement to reduce the workload on admins to manage emails.

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KishoreSugumar - PeerSpot reviewer
KishoreSugumar
Co-Founder & VP-Sales at QuantumShield Technologies LLP

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 competition in the Indian market, and the local presence is lacking as they do not have a local representative currently.

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RC
Reece Charles
Information Security Analyst at Enfield Central Library
There is nothing that notably stands out in need of improvement at present. View full review »
Toby Elliott - PeerSpot reviewer
Toby Elliott
Head of IT & Innovation at Shoreham Port Authority

I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft. So it blocks sending emails to Microsoft addresses. The aforesaid reason made me decide to opt for an alternate solution possibly.

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Frank Rawson - PeerSpot reviewer
Frank Rawson
Managing Director at Conekt Business Group

Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence. 

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Clinton Ramkelawan - PeerSpot reviewer
Clinton Ramkelawan
Senior Manager at Massmart

The lock in is very, very tight. It is impossible to move out of Mimecast to a different product, like Proofpoint or 365 ATP, and keep the chain of custody for every email that I've archived.

The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit. That gap needs to close. But other than that, I think it's good.

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reviewer1619394 - PeerSpot reviewer
reviewer1619394
Group CIO at a construction company with 10,001+ employees

They could provide a unified licensing model, including all the security features.

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RD
Rodney Daniels
Project Manager at TFG

The solution is complex and not easy to use.

I have to continuously manage the tech in a different space with the solution. I've got to manage different types of rules separately.

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reviewer2257794 - PeerSpot reviewer
reviewer2257794
Senior Head of IT at a construction company with 51-200 employees

Nothing’s been working properly in the product. There's a lot of misclassification. The attachment scanning feature doesn't work properly.

The product needs to fix the existing problems, which Mimecast is always in denial about. It definitely must catch up with the market. It needs to fix its core products, which don't work very well.

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Rodrigo Perez - PeerSpot reviewer
Rodrigo Perez
System Administrator at Abu Dhabi University

The solution's console interface was recently changed for the admins, but the previous one was much better because we could open tabs on it. Currently, it's just one pane, and we cannot open tabs in it.

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Todd Blake - PeerSpot reviewer
Todd Blake
Senior IT Specialist at a healthcare company with 11-50 employees

The interface needs improvement.

If I'm looking at the administration panel right now, I can track messages. I can see what was accepted. I can see what's held. I can see what's rejected. I can see what's bounced. I can see delivery. I can see processing. However, it's all seven different things, and that's just silly. 

Also, if something's held and shouldn't be, I can release it, yet I can't add it straight to an allowed list from there. I have to go to a whole separate section, create a policy, update the policy, and add the email address, whereas in our prior product that we used to use, called AppRiver, if mail came in and it should be white-listed or allowed, you would just click the little box and say always allow, and it would just add it straight to the appropriate filter to allow it. The way we have to do it in this product is very convoluted. On the back end, there are ten different places to check for things before you finally figure out the right spot.

I'd like to have better support from the product in the future. I have noted that support has gotten worse over time. 

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Joshua Garnett - PeerSpot reviewer
Joshua Garnett
Director, Information Services at Institute of Peace

Many of our users complain that the system is blocking too many attachments. It's a good practice from a security perspective, but our users think Mimecast is doing too much. It might be something we'll have to adjust.

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AshirbadDasmohapatra - PeerSpot reviewer
AshirbadDasmohapatra
Lead Engineer - Work Modernization at Searce Inc

Certainly, the primary area needing improvement is Mimecast's customer support. Our experience as Mimecast customers has been less than satisfactory. Even when raising a priority ticket, the response time is unacceptably long, often taking around five to six hours. This level of service is disappointing. Additionally, there have been recurring service disruptions in the UK region, leading to extended email delays due to various service issues. This year alone, we've encountered such problems on approximately four occasions.

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Todd Blake - PeerSpot reviewer
Todd Blake
Senior IT Specialist at a healthcare company with 11-50 employees

Overall, just across all the Mimecast pieces that we use, it's somewhat of a mess when you want to figure out where you need to go to make a change. The interface isn't the best. How everything works on the back end is confusing.

There are no missing features to speak of.

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Mohamed-Kamal - PeerSpot reviewer
Mohamed-Kamal
Tech manager at MKTech

The installation is not so straightforward. In comparison, for example, Proofpoint or Defender offer easier installations when you integrate with Active Directory.

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Rohit Sule - PeerSpot reviewer
Rohit Sule
Graduate Analyst at SecurityHQ

Mimecast need to ensure that the body text format is correctly handled and that images are properly embedded in the body text. Additionally, Mimecast should ensure that the system can accommodate multiple users and effectively send information to them.

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Andrew Britz - PeerSpot reviewer
Andrew Britz
Information Technology Executive at IFS Africa

The solution should include more AI features instead of Mimecast's more general static configuration tooling.

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reviewer1984680 - PeerSpot reviewer
reviewer1984680
IT- Manager. at a retailer with 51-200 employees

The price of the solution is expensive. It can improve by reducing the price. 

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Ashish Dubey - PeerSpot reviewer
Ashish Dubey
Lead Security Analyst at SecurityHQ

The differentiation between bulk spam mail and campaign-related mail could be improved. Campaign-related activities are challenging to find in Mimecast Mailbox Continuity. For example, in an organization with a hundred people working for you, there will be approximately 100 email IDs. As a sender, if I want to spoof some people in the organization and hack their credentials, I need to identify targets for the phishing campaign. So I could use an email address to spoof a Microsoft page or create a fake page impersonating Microsoft to harvest credentials. By sending a hundred people a hundred emails with the same subject and same sender, with the same URL, this will easily be detected. So the second option is to spoof the sender every time by sending a hundred people a hundred URLs with similar subjects. In the second scenario, Mimecast Mailbox Continuity is not very good at detecting it.

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TC2 - PeerSpot reviewer
TC2
Manager, Cruise Division at a leisure / travel company with 201-500 employees

While it's quick and easy, the initial setup could be more user-friendly.

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reviewer1651545 - PeerSpot reviewer
reviewer1651545
Senior Equity Analyst & Director of Managed Income Strategy at a financial services firm with 51-200 employees

This solution can be frustrating. It blocks many things that should be going through. I have to authorize permission, which seems to be a frequent occurrence. It may be that we have set our protection too high but we work in a regulated industry.

When you click to change permissions on something, it always launches a browser instance to tell me that I have taken an action. I have to close that out and go on to the next one, and when I asign permission another item, again it opens up a browser again to notify me that I have taken action. I don't know why it does that or why it is necessary.

The filtering needs more flexibility.

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reviewer1465431 - PeerSpot reviewer
reviewer1465431
Head Of Finance And Administration at a financial services firm with 1,001-5,000 employees

It was not so much about the product itself, however, their business model needs improvement. 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. This is something which really worries us as a company.

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Gautham Vakapalli - PeerSpot reviewer
Gautham Vakapalli
Cyber Security Professional at Green Edge Computers LLC

External security features need improvement.

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reviewer2275116 - PeerSpot reviewer
reviewer2275116
Manager Information Security, Risk & Governance at a retailer with 501-1,000 employees

The feature that should be included is to remove the block on the encrypted files.

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reviewer1907046 - PeerSpot reviewer
reviewer1907046
IT Consultant at a tech services company with 11-50 employees

The solution is very expensive. 

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reviewer1729950 - PeerSpot reviewer
reviewer1729950
Inside Solutions Architect at a tech services company with 1,001-5,000 employees

I don't think it's ideally suited for maybe a smaller business environment, like, for example, for companies with less than 100 seats. They do have SMB packages, but I think from a complexity standpoint, it's better suited to medium to larger enterprises.

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reviewer1627185 - PeerSpot reviewer
reviewer1627185
General Manager at a tech services company with 11-50 employees

From an administrative point of view, Mimecast is a little bit cumbersome and difficult. It's not something that the end-user can easily find navigate themselves.

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reviewer1644384 - PeerSpot reviewer
reviewer1644384
CEO at a tech services company with 11-50 employees

Its pricing can be improved. It is a bit expensive.

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reviewer1538043 - PeerSpot reviewer
reviewer1538043
Director ICT at a museum or institution with 51-200 employees

There is always space for them to improve. As a user, the user interface of the management console could be upgraded, for example. They can definitely improve their management console interface.

The solution could always add more features and expand its offering.

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reviewer1560591 - PeerSpot reviewer
reviewer1560591
IT System Administrator at a engineering company with 1,001-5,000 employees

Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you, but that is, unfortunately, kind of becoming a trend with everything.

In terms of features, I haven't had any complaints. However, I don't like the fact they moved to a paid training subscription model. They used to have a lot of free webinars for training, but they have started to charge for them in the past year.

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reviewer1052493 - PeerSpot reviewer
reviewer1052493
Senior Email Engineer at a legal firm with 1,001-5,000 employees

Technical support has been slower than it was in the past, likely due to the pandemic.

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reviewer1449105 - PeerSpot reviewer
reviewer1449105
IMC Companies at a transportation company with 1,001-5,000 employees

The detection rates are an area for improvement. The other opportunity area I see with Mimecast is that when you're searching inside of the admin console and you detect malicious emails that bypass Mimecast security: let's say you had a hundred of those messages there. Mimecast doesn't have a way to group those and submit one single report to Mimecast. You have to do one at a time which is not really very conducive — it's very time-consuming.

Those are the main two points. If they work to fully resolve those two issues, that would make this an awesome tool. I mean, it's a good tool, but it would be even better.

The main feature that will help everyone will be a different way to submit phishing or malicious emails that went through security. That would be a very good feature I would like to see in the next release.

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SM
Sumit Mhaskar
Regional Manager at a tech services company with 11-50 employees

Because we have not faced any challenges there is no way that we can say that there has to be some improvement.

The price could be better, it should be reduced.

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WD
Warren Dettmann
System Architect at a hospitality company with 501-1,000 employees

The interface and the documentation could be improved. They can also include some more training resources and content like video. While setting things up, I had to search for the information quite a bit. It took me time to find the correct way to do something. The information is there, but it is sort of all over the place. They can create a better help knowledge base or help portal. 

It retains your email for 45 days. They can maybe increase this duration.

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EL
Emile Lee
Systems Enginner at y-it

They should make the solution's identity protection feature even better. Also, its default policies need improvement. In addition, they should improve the cookies management feature as well.

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MY
MikeYuen
Systems Engineer at Thrive

The product's interface could be improved to be more user-friendly. 

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Buyer's Guide
Mimecast Advanced Email Security
June 2026
Learn what your peers think about Mimecast Advanced Email Security. Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.
903,118 professionals have used our research since 2012.