The solution is used for banking and finance clients.
Cyber Security Professional at Green Edge Computers LLC
Can be used for the banking and financial sectors, and their DMARC Analyzer is very valuable
Pros and Cons
- "The most valuable feature is the DMARC Analyzer."
- "External security features need improvement."
What is our primary use case?
What is most valuable?
The most valuable feature is the DMARC Analyzer.
What needs improvement?
External security features need improvement.
For how long have I used the solution?
I have been using Mimecast Email Security for one year.
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.
904,836 professionals have used our research since 2012.
What do I think about the stability of the solution?
It is a very stable solution.
What do I think about the scalability of the solution?
It is a scalable security solution. I have one client with 5,000 users and another with 200 users. Mostly, SMBs use this solution. It is a bit slow for enterprises.
How was the initial setup?
The setup is really easy. You do not need to install it on-premises. You can install it on the cloud with any desktop. The deployment takes one hour.
What's my experience with pricing, setup cost, and licensing?
The solution is expensive.
What other advice do I have?
Overall, I would rate the solution an eight out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer.
Manager Information Security, Risk & Governance at a retailer with 501-1,000 employees
Easy configuration and the interface is very easy to navigate and user-friendly
Pros and Cons
- "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."
- "The feature that should be included is to remove the block on the encrypted files."
What is our primary use case?
Mimecast Email Security with Targeted Threat Protection is used for email security, including both inbound and outbound emails. It is also used for phishing detection and safeguard the oragnisation’s communication methods.
What is most valuable?
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?
The feature that should be included is to remove the block on the encrypted files.
For how long have I used the solution?
I have been using Mimecast Email Security with Targeted Threat Protection for the past 5 years.
What do I think about the stability of the solution?
I would rate it eight out of ten.
What do I think about the scalability of the solution?
I would rate it nine out of ten.
How was the initial setup?
The configuration is easy to implement, hence I would rate it eight out of ten.
What about the implementation team?
The deployment was fast and required no expertise. It can be easily handled by one person and the steps are very easy to follow.
What was our ROI?
It has a good return on investment
What's my experience with pricing, setup cost, and licensing?
Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, five out of ten.
What other advice do I have?
Based on my experience, I would rate it nine out of ten.
Disclosure: My company has a business relationship with this vendor other than being a customer. Customer
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.
904,836 professionals have used our research since 2012.
IT Consultant at a tech services company with 11-50 employees
Reliable with nice dashboards and an easy setup
Pros and Cons
- "It offers an easy initial setup."
- "The solution is stable and reliable. There are no bugs or glitches, and it doesn't crash or freeze."
- "The solution is very expensive."
What is our primary use case?
We primarily use the solution for filtering.
What is most valuable?
The dashboard is very nice.
It offers an easy initial setup.
The solution has been stable.
We can scale the product.
Technical support is helpful.
What needs improvement?
The solution is very expensive.
For how long have I used the solution?
I've used the solution for a couple of years. Maybe four or five.
What do I think about the stability of the solution?
The solution is stable and reliable. There are no bugs or glitches, and it doesn't crash or freeze.
What do I think about the scalability of the solution?
This is s scalable product. If you want to expand it, you can.
We have 100 people on the solution at this point. The users vary. Different departments use it.
How are customer service and support?
We are satisfied with the technical support. We find them to be responsive.
How would you rate customer service and support?
Positive
Which solution did I use previously and why did I switch?
We did previously use a different solution. It might have been Check Point. Once we saw the demo, we felt this solution would be a better fit, so we switched.
How was the initial setup?
The solution is very simple to set up. It's not overly complex or difficult. The deployment only takes a couple of days.
One person can handle any maintenance requirements as needed.
What about the implementation team?
We had a third-party assist us with the initial setup process. We did not handle it completely by ourselves.
What's my experience with pricing, setup cost, and licensing?
The solution is quite pricy. We find it to be costly.
What other advice do I have?
I'm a customer and end-user.
We are using the latest version of the solution.
I'd rate the solution eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Inside Solutions Architect at a tech services company with 1,001-5,000 employees
Gives businesses continuity; best suited for scaling in large and medium-sized enterprises
Pros and Cons
- "Mimecast has some good support services in place."
- "Mimecast Mailbox Continuity helps companies continue to move."
- "I don't think it's ideally suited for maybe a smaller business environment, like, for example, for companies with less than 100 seats."
How has it helped my organization?
Mimecast Mailbox Continuity helps companies continue to move. It allows them to continue to function and utilize email even if there's a downstream issue with your exchange server or online email server. If either of those goes down or offline for maintenance or any other purpose, users will still have access to their mailboxes and be able to send and receive emails. It gives companies business continuity.
What needs improvement?
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.
What do I think about the scalability of the solution?
I would say it's scalable in large and medium-sized enterprises.
How are customer service and support?
Mimecast has some good support services in place.
What other advice do I have?
A feature like Mimecast Mailbox Continuity is likely not something that people ask for but it is nice to have and well done. Continuity is normally sold as part of an email protection bundle, so I don't know if you can even get it separately.
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
General Manager at a tech services company with 11-50 employees
It does exactly what it promises to do
Pros and Cons
- "Mimecast certainly helped my customers reduce phishing emails."
- "Mimecast is a brilliant product; it works very well, I have very seldomly, if ever, had any problems with it, and it does exactly what it promises to do."
- "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."
What is our primary use case?
My customer base is made up of small clients. They all fall between five and 10 users.
How has it helped my organization?
Mimecast certainly helped my customers reduce phishing emails.
What is most valuable?
Among my customers, there was a lot of traction for the archiving. The targeted threat protection was also quite useful.
What needs improvement?
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.
For how long have I used the solution?
I've been using Mimecast for five years. I used to be a reseller, but now I've moved on to a different business.
What do I think about the scalability of the solution?
As far as I'm concerned, it worked exactly the same for a client that had one mailbox as it would for a client that had 500 mailboxes.
How was the initial setup?
I've never set Mimecast up. The technical teams did that. From my understanding, it took them about two days to set it up.
What's my experience with pricing, setup cost, and licensing?
Mimecast is expensive. It's a premium product. It sometimes could be a difficult sell because of the cost.
Which other solutions did I evaluate?
I don't have anything to compare Mimecast with because I haven't looked at any of the others yet to see if there is something comparable. But I would presume that by now there will be other products that can compare to it. To get security and targeted threat protection, one could potentially look at Sophos Central Email Protection. But they don't have an archiving solution. So one would have to go somewhere else to get an archiving solution. With Mimecast. at least, it's all available from the same vendor, if that makes sense.
What other advice do I have?
I would rate Mimecast nine out of 10. It's a brilliant product. It works very well. I've very seldomly, if ever, had any problems with it. It does exactly what it promises to do. At the same time, it is expensive. That's the only problem. And the price tag puts it out of the range of smaller businesses. That's where I think it falls flat. But I always tell people the same thing: If security is important to you, then certainly spend the money and get it, because Mimecast is a great product and it works.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
CEO at a tech services company with 11-50 employees
Easy-to-use admin console, simple to set up, and designed for enterprises
Pros and Cons
- "Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."
- "If you want the ease of use, then Mimecast, or at least a cloud solution, is the way to go."
- "Its pricing can be improved. It is a bit expensive."
What is our primary use case?
We use it internally, and we support other customers on it. Enterprises and large organizations use it to manage their platform on a large scale.
It is a cloud product, so it is always going to be the latest version. Mimecast themselves are the cloud provider.
What is most valuable?
Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it.
What needs improvement?
Its pricing can be improved. It is a bit expensive.
For how long have I used the solution?
I have been using this solution for five years.
What do I think about the stability of the solution?
It is stable.
What do I think about the scalability of the solution?
It is suitable for small, medium, and large companies. It actually cuts across all the sectors and all the sizes. It is designed for enterprises.
In terms of the number of users, it affects all the users. We have over a hundred people at the moment. We also have more than 20,000 customers on it.
How are customer service and technical support?
Their technical support is pretty good.
How was the initial setup?
Its initial setup is pretty simple. It takes nearly a day.
In terms of maintenance, it is online. So, they do all of the maintenance.
What about the implementation team?
I did it by myself.
What's my experience with pricing, setup cost, and licensing?
It is a bit expensive.
What other advice do I have?
If you want the ease of use, then Mimecast, or at least a cloud solution, is the way to go. It has been a good product. It is still at the top of its game in many aspects.
I would rate this solution a nine out of 10.
Which deployment model are you using for this solution?
Public Cloud
If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?
Other
Disclosure: My company has a business relationship with this vendor other than being a customer. Partner
Director ICT at a museum or institution with 51-200 employees
Great technical support with good filtering and excellent security
Pros and Cons
- "The initial setup is very straightforward."
- "The security on offer is very good."
- "As a user, the user interface of the management console could be upgraded, for example."
- "It was not a good experience due to the fact that our main infrastructure had a problem for that entire time."
What is our primary use case?
The solution is primarily used to stop malicious emails with malicious attachments and can stop users from accessing sites or links that have a virus or malicious content.
What is most valuable?
The security on offer is very good. It's great at preventing users from accessing malicious sites or email.
The filtering features are excellent. It allows you to any links an email might have. For example, when a user receives an email with a link, Mimecast takes that link and scans it, checking for any malicious content. If it's okay, then it passes on the email to the user. If it's not okay, or it's not sure about the content of the link, it then sends a notification to the user. It helps users to look at the user to see if it is a trusted source or not, and to decide if they want to open it or not.
The stability is very good.
The initial setup is very straightforward.
The technical support is excellent.
What needs improvement?
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.
For how long have I used the solution?
I've been using the solution for about two and a half years or so.
What do I think about the stability of the solution?
It is a very stable solution. The last two half years that we have used the solution have been great. That said, four months ago they had some downtime for about three hours and it was something unexpected. It was not a good experience due to the fact that our main infrastructure had a problem for that entire time. It was not something that was quick or planned and it was during working hours for us. It was very difficult. We would have appreciated a heads up if it was meant to be planned.
Beyond that, we haven't really dealt with any bugs or glitches, and it doesn't crash or freeze.
What do I think about the scalability of the solution?
In just one group at our organization, we have about 200 users.
We don't have any plans to extend the usage. We are okay with the features and the modules already. We don't have any plans to change anything right now.
How are customer service and technical support?
Technical support is good and to the point. They are helpful and responsive. We're quite happy with the level of service they provide to us.
Which solution did I use previously and why did I switch?
Previously, we used Barracuda. We ran some tests and decided that Mimecast was a better option, which is why we ultimately decided to switch.
How was the initial setup?
The initial setup was not complex or difficult. It was very, very easy. We had a problem initially as we were trying to figure things out and the Mimecast team was very, very supportive.
The deployment was fast. It took almost a week or something like that. It was very, very quick.
What about the implementation team?
We did the implementation ourselves with our resources. We didn't get any help from a freelancer. There were no integrators or consultants involved.
What's my experience with pricing, setup cost, and licensing?
I can't speak to the exact licensing costs. It's not an aspect of the solution I directly deal with.
What other advice do I have?
We are customers and end-users. We don't have a business relationship with Mimecast.
I'd recommend the product to other users and companies. It's a good system and very effective.
In general, I would rate the solution at an eight out of ten.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IT System Administrator at a engineering company with 1,001-5,000 employees
Easy-to-use admin console, stable and scalable, and does a good job
Pros and Cons
- "It does a good job for us, and its admin console is easy to use."
- "It is our spam filter, phishing filter, and executive impersonation filter."
- "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."
- "Their support should be improved. They are notorious for sending you to knowledge-based articles rather than actually talking to you about the problem you're reporting."
What is our primary use case?
It is our spam filter, phishing filter, and executive impersonation filter. We have its latest version.
What is most valuable?
It does a good job for us, and its admin console is easy to use.
What needs improvement?
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.
For how long have I used the solution?
I have been using this solution for two years.
What do I think about the stability of the solution?
It is stable. We didn't have any issues.
What do I think about the scalability of the solution?
It is scalable. It is used across our entire enterprise. We probably have about 175 people, and they range from our CEO to all the way down to our warehouse people.
How are customer service and technical support?
They always send you a link to an article rather than call you and talk to you about the problem you're reporting.
How was the initial setup?
It was pretty complex.
What about the implementation team?
We had a third party do the setup for us.
Which other solutions did I evaluate?
We looked at Microsoft, Proofpoint, and Mimecast.
What other advice do I have?
I would advise others to take a good look at it. There are a lot of layers to it, and there are parts of Mimecast that we don't even use yet. It is pretty much a beast when it comes to email security, but just make sure you take your time and have somebody who knows how to set it up. Give enough training to your admin. I manage several different pieces, and Mimecast is one of them. It is just an ongoing thing that requires monitoring all day and looking for phishing, impersonations, and things like that. You also have to set up different policies as they come about for block centers and permitted centers. It is almost a full-time job.
I would rate Mimecast Email Security with Targeted Threat Protection an eight out of ten. I don't really have any complaints, and it does its job.
Which deployment model are you using for this solution?
Private Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Email Engineer at a legal firm with 1,001-5,000 employees
Good anti-spam and large file sending capabilities, good training, and easy to set up
Pros and Cons
- "The Large File Send feature comes in handy when you have to send fairly large attachments."
- "Mimecast is pretty good, even if you're on Office 365."
- "Technical support has been slower than it was in the past, likely due to the pandemic."
What is our primary use case?
We primarily use this product to journal our email. If there is a disaster, for example, and our primary and secondary data center goes down, we can turn it on for email continuity.
We don't take advantage of the archiving capability.
What is most valuable?
The two most valuable features are anti-spam and Large File Send. I know a lot of people that have Mimecast in front of Office 365 because it's a pretty good firewall in front of your email.
The Large File Send feature comes in handy when you have to send fairly large attachments.
They provide training classes online, where you can review with an instructor.
What needs improvement?
Technical support has been slower than it was in the past, likely due to the pandemic.
For how long have I used the solution?
We have been using Mimecast Mailbox Continuity for approximately five years.
What do I think about the stability of the solution?
It has been stable for the past couple of months, although last year wasn't too good because there were a couple of service interruptions. I think that it was related to some upgrades that they were doing.
What do I think about the scalability of the solution?
With respect to scalability, we sometimes point to third-party solutions and it integrates pretty well with other products.
How are customer service and technical support?
The technical support is pretty good. It changed recently, and I think that they're in the process of revamping it. I think that due to COVID, it is definitely taking longer for some things to be taken care of.
Which solution did I use previously and why did I switch?
Prior to Mimecast, we were using Symantec MessageLabs. The support that we were getting from Symantec was not good. The problem with Symantec products is that they start well, but eventually, they are not good enough.
How was the initial setup?
The initial setup is easy and the process is informative.
Besides the online classes that are available, there's someone that will guide you through a good part of the setup as far as getting everything in place and migrated, so they make it pretty easy.
What other advice do I have?
My advice for anybody who is considering this product is to test it out, although it's always good to look at other vendors, too. Mimecast is pretty good, even if you're on Office 365.
This is a product that is definitely needed today.
I would rate this solution an eight out of ten.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IMC Companies at a transportation company with 1,001-5,000 employees
Protects your organization from all types of threats
Pros and Cons
- "The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."
- "Mimecast has been in the market for a long time; it's a good tool if you want to simplify your operations and a good tool for removing on-prem appliances that otherwise you would need to do with the protection that Mimecast provides."
- "The detection rates are an area for improvement."
What is our primary use case?
Mimecast security in general, it's a SaaS service so they have their servers; they have everything on their side and we're just quote-unquote, passing the traffic through them, the email traffic through them.
Mimecast has multiple different solutions, all linked to the email. They recently added user info security training, but we're not using that. We, however, are using the archive piece and we're currently using their security threat protection. Regarding the threat protection — that does just fine. As far as the security goes — they had a big hiccup earlier this year where they were giving a false positive to a bunch of attachments. I'm not sure what happened on their side but for one week at least we had that issue. It took them a little over a week to resolve the issue. We also had some minor incidents after that, that they resolved.
Generally speaking, other than that event, it has been good. It doesn't block a hundred percent of the security threats received, but you have a lot of options to tag or even further analyze the messages received through Mimecast, either to a third-party solution or through an endpoint solution.
Everyone uses this solution at our company, whether they know it or not because you can leave it as transparent as you want it, or as user-demanding as you want it. There are specific items that only IT uses, but in general, this solution is used by one hundred percent of the company.
How has it helped my organization?
Recently they added a stress threat dashboard, which basically gives you metrics on the security side. It tells you how many threat detections were found, how many users were targeted, what were the specific threats discovered slash detected. This has proven to be a great tool for our company.
What is most valuable?
The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature. They have a process where whenever they receive an email with an attachment, they process the attachment through a sandbox. Depending on your configuration, this is a customer-specific configuration, you can tell it to do a bunch of things. You can block the attachment, you can create a safe version of the attachment, or you can tell it to let it go or put it in a help queue for either user moderator or administrator review.
What needs improvement?
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.
For how long have I used the solution?
We've been using Mimecast since 2013.
What do I think about the stability of the solution?
Stability-wise, I would give this solution four and a half stars out of five.
What do I think about the scalability of the solution?
The scalability is not even an issue — it's a SaaS solution.
How are customer service and technical support?
The challenge with the Mimecast support is that unless you do a phone call, you're going to have to wait for someone to get back to you. Sometimes, you don't have the time to just call in, unless it's a critical matter that you need to resolve right away.
In general, they rely a lot on their knowledge base, which has very good information, but there are some specific items that are not either clear on the documentation or are not covered in the documentation. On average, I would say maybe we submit a ticket to them every other month — it's not a big deal on that side.
Which solution did I use previously and why did I switch?
We used to use another solution, but we switched over to Mimecast because it has higher catching rates.
How was the initial setup?
The setup was very straightforward for the actual Mimecast solution. If you're talking about the specifics of the security piece, the security piece does take you some time because, by default, it might block more emails than you want it to block, or let other emails get in than you want to get in. You have to create specific rules for impersonation attachment protection. If you're using URL protection, that's another whole thing to set up.
What about the implementation team?
We took care of the deployment in-house, with no outside help.
You can be up and running in no time. You just have to update a couple of your records. It's not the getting up, it's getting it where you want it to be. It's, quote-unquote, customizing the security levels of perfection you want. That's why it takes time — It's an ongoing task. It's not something that you should set up and let go of. You have to keep adding, removing, or tweaking the settings as needed.
What was our ROI?
I can say that the recently released threat dashboard gives you an idea of how successful you are being with the solution.
What's my experience with pricing, setup cost, and licensing?
The licensing costs are per-user for the product that you get with them. It varies a lot. Then you have different discount tiers depending on the size of your organization or the partner you're using. I mean, there's a lot of quoting with the Mimecast solution.
As far as additional costs are concerned, there are some for product licenses that you also have to pay — also, the support on Mimecast, the base support doesn't include email or phone calls, I think. In other words, there is a big fee for additional support on top of the per-user cost.
What other advice do I have?
Mimecast has been in the market for a long time. It's a good tool if you want to simplify your operations. It's a good tool for removing on-prem appliances that otherwise you would need to do with the protection that Mimecast provides. I would recommend that you just keep that in mind.
On a scale from one to ten, I would give this solution a rating of nine. If they corrected those two issues that I mentioned, then it would be an 11.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
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Updated: June 2026
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