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.
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?
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.
Buyer's Guide
Mimecast Email and Collaboration Threat Protection
March 2026
Learn what your peers think about Mimecast Email and Collaboration Threat Protection. Get advice and tips from experienced pros sharing their opinions. Updated: March 2026.
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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 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.
Buyer's Guide
Mimecast Email and Collaboration Threat Protection
March 2026
Learn what your peers think about Mimecast Email and Collaboration Threat Protection. Get advice and tips from experienced pros sharing their opinions. Updated: March 2026.
885,264 professionals have used our research since 2012.
Head Of Finance And Administration at a financial services firm with 1,001-5,000 employees
Good gateway and email security with an easy initial setup
Pros and Cons
- "It's really quite user-friendly. In terms of technical superiority and the product itself, there are no complaints. It is really cutting edge."
- "In terms of technical superiority and the product itself, there are no complaints."
- "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."
- "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."
What is our primary use case?
We use Mimecast as our email gateway. We also use it as our archival service. All those phishing, anti-phishing, spear phishing, spamming, and other security filters that they have, we use all of them.
What is most valuable?
We have found email security very good.
The gateway is excellent.
We have found the archival services to be very valuable.
It's really quite user-friendly. In terms of technical superiority and the product itself, there are no complaints. It is really cutting edge.
The initial setup is straightforward.
What needs improvement?
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.
For how long have I used the solution?
I've used the solution for about six years at this point. It's been a while.
What do I think about the stability of the solution?
The solution is stable. There aren't bugs or glitches. It doesn't crash or freeze. It's very good.
What do I think about the scalability of the solution?
The solution can scale well. If a company needs to expand, it can do so rather easily.
We have grown from about 2,600 users to about 4,000 users. We have added additional geography as well. The product is resilient enough to take care of all of this.
How are customer service and technical support?
We have contracts and we are also subscribed to a service plan. Whenever we have used it, the service levels have been very good and we have no reason to complain.
Which solution did I use previously and why did I switch?
We were previously thinking of an alternative to Mimecast for two reasons. The main reason is as an organization, we are in the financial service industry, and we have to show some data resiliency to our regulators. However, due to the fact that we're present in 30 countries, what happens is all Mimecast data is centrally hosted in one particular grid, which is preventing us from showing data resiliency to them. I want a solution that allows me to selectively map users to a particular geography.
How was the initial setup?
We didn't find the initial implementation complex. It was pretty easy and rather straightforward. We didn't run into trouble.
We are a complex organization. We are present in 30 countries. It was a mix of on-prem and some were in Office 365. Due to the set up of our own architecture, we had to undergo some labor, however, otherwise, the entire process was pretty straightforward.
What's my experience with pricing, setup cost, and licensing?
We typically use a subscription service. If there are version upgrades. We automatically get upgraded to the latest version, as it's a software as a service setup. We don't need to update it as Mimecast takes care of it.
If you need to extract data from their archival service, there is an additional fee involved.
As we are an enterprise customer and we have a relationship with them, what we are told by the reseller is that we pay about 40% of their list price for this product.
It's an expensive solution. There are other competitors, like Barracuda, who offer similar services. We believe that over the years, they have picked up, and their pricing is much more competitive than Mimecast. As an organization, Microsoft itself has really matured over the years. They offer probably 90% of what Mimecast is offering, and then you don't have to pay anything extra for it because it comes with part of the Office 365 licenses. That is why we also believe that there is a lot of room for Mimecast to get their act together, pricing-wise.
Which other solutions did I evaluate?
We evaluated a few other options such as Cisco IronPort as a security service. We evaluated Proofpoint. The comprehensive solution that Mimecast offers, however, really made us sign on the dotted line.
What other advice do I have?
We're just an end-user.
We use their Perimeter Defense plan, we use their Continuity plan, we also use email to archive. These are the three scales that we use from them.
I would advise others considering the solution to technically evaluate their competencies, their highs, and lows, first. Also, read the fine print, and understand the exact costs. A company will need to understand natively how much of Mimecast capabilities does Microsoft offer if you just subscribe to an Office 365 license. It might make them rethink using this solution.
From a technical standpoint, I would rate the solution eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
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?
The solution is used for banking and finance clients.
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.
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
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."
- "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."
- "From an administrative point of view, Mimecast is a little bit cumbersome and difficult."
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.
Buyer's Guide
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Updated: March 2026
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