# Page 2 | MimeCast Email Security Reviews 2026. Verified Reviews, Pros & Cons | Capterra

> Page 2 - Is MimeCast Email Security the right Email Security solution for you? Explore 80 verified user reviews from people in industries like yours to make a confident choice.

Source: https://www.capterra.com/p/119826/MimeCast-Email-Security/reviews

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MimeCast Email Security

4.3 (80)

[View alternatives](https://www.capterra.com/p/119826/MimeCast-Email-Security/alternatives/)

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Last updated March 13th, 2026

# Page 2 - Reviews of MimeCast Email Security

## Showing most helpful reviews

Showing 26-50 of 80 Reviews

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Most Helpful

Rating

Company Size

Reviewer's Role

Length of Use

Frequency of Use

BS

Bryan S.  
HD Mgr  
Health, Wellness and Fitness  
Used the software for: 1-2 years

### "Mimecast a Go!"

September 19, 2024

5.0

Mimecast offered a great value for the amount of things it does. Using digest emails allows IT to put the user into the mix

Pros

Mimecast does a great job of stopping spam and phishing.

Cons

Does not stop internal users from forwarding spam

Review Source

MP

Maureen P.  
Reviewer  
Accounting  
Used the software for: 6-12 months

### "Mimecast provides good email security - No major complaints or issues noted"

January 24, 2023

4.0

My overall experience with Mimecast email security has been positive. I do feel that this software adds value.

Pros

Mimecast provides a good level of email security protection. It prevents spam emails, which is a big convenience. In addition, it alerts me as the user if a potential threat is suspected, giving me the option to either reject or accept the email. Attachments to emails are filtered/scanned by the software for potential threats, which is also a plus.

Cons

I sometimes find it troublesome that email attachments are first screened by Mimecast, and I have to either approve or reject them prior to being able to download them. Sometimes when email attachments are outright blocked, I have to have them released by IT. This isn't a huge issue, just a minor inconvenience.

Review Source

Lindsey H.  
Marketing & Business Development Coordinator  
Law Practice  
Used the software for: 2+ years

### "Pretty good software!"

August 26, 2019

4.0

I have had a great experience with this software. If they could update their app to be more user friendly, I think they would be unstoppable!

Pros

It always functions as promised. Every software can glitch from time to time, but rarely do I run into major technical issues with this software.

Cons

Every once in a while it will hold back emails that I have definitely allowed to come into my inbox, and the app is pretty clunky, but it functions well most of the time which in the end is all that matters.

Review Source

VR

Verified Reviewer  
Senior Associate - IT Audit  
Accounting  
Used the software for: 2+ years

### "E-mail Security and Filtering"

November 18, 2019

5.0

Increase productivity (less junk mail flowing through without proper checks and balances in place) amongst the workforce, organized e-mail flow (many of our employees work directly out of their e-mail and it is important to keep it as filtered as possible) and overall security - many, many viruses and malware and phishing attacks come via e-mail and Mimecast helps to thwart these!

Pros

We enjoy how it will hold all e-mails that don't meet the criteria to go directly to an inbox in a separate folder and send a summary e-mail each day. Our users have the ability to "permit" "release" or "block" these e-mails which is excellent. It eliminates junk e-mails (potentially) during the day, with the worst case scenario being missing an e-mail for an entire day (has only happened a few times).

Cons

Missing a key e-mail because it gets held up in the filtering is troublesome, however, need to simply work to refine filtering criteria to ensure it doesn't repeat

Review Source

Adam F.  
IT Infrastructure Analyst  
Oil & Energy  
Used the software for: 2+ years

### "Email filtering and Security"

February 13, 2023

5.0

Mimecast helps us manage emails effectively blocking spam and other unwanted emails. It also provides as a DR solution for sending and receiving mail. As well as retrieving wrongfully deleted mail.

Pros

MimeCast is an excellent all in one email filter and management tool. MimeCast offers great functionality to block spam and filter any unwanted emails. We use block and allow lists to our benefit for email domains. Mimecast also offers a large range of other features including large file send which is excellent for securely sending large files which may be blocked by normal email due to the size.

Cons

Mimecast is a great tool, One issue I face with Mimecast is the size of the portal and amount of features that are similar. It can be tricky to find what you need at times.

Review Source

David M.  
Director of Technology Services  
Law Practice  
Used the software for: 2+ years

### "Great product that just works as expected. Easy to use and manage."

November 8, 2017

5.0

Email protection

Pros

Mimecast is a great product overall and just works as expected. Because it is a SaaS offering, setup and config is quick and easy and the overall reliability has been everything we expected it to be. Mimecast has also continued to innovate and introduce new offerings to enhance our overall security which is key to staying ahead of the curve from our perspective.

Cons

The only con I have with Mimecast is that the administrative console is not the easiest to navigate and is often slow. While the end user facing components are easy to use and do not require much training, the admin portal seems designed by engineers with less end-user perspective. It is also much slower to navigate than other websites.

Review Source

VR

Verified Reviewer  
Senior Engineer: Rocket Motors and Warheads  
  
Used the software for: 1-2 years

### "Mimecast is an additional security layer that I haven't felt much benefit from at all."

May 31, 2018

3.0

I haven't found any benefits from the software as yet. Maybe the benefits are the fact that my mailbox isn't crowded with SPAM, but, then again, it wasn't before MimeCast. I may be looking at this entirely wrong and not seeing the benefits that have been introduced, but I haven't felt them at all.

Pros

Mimecast runs on the e-mail server side, so there was no change to the way I way or handle e-mails every day. The software guided me through device registration when opening links, and explained what was happening at each step and why.

Cons

Lots of e-mails that come from trusted sources have been marked as SPAM. This occurs on a regular basis. The fact that device registrations, to ensure links can be opened in e-mails, are based on a stored cookie is really inconvenient. This means that if I choose not to allow cookies, I need to register the device I am using (via a 2 factor emailed code) every time I click on a link in e-mail.

Review Source

DP

Denise P.  
IT Manager  
Packaging and Containers  
Used the software for: 2+ years

### "Great Email Security/Filtering and Monitoring"

May 27, 2022

5.0

I'm a fan of Mimecast. It does everything our company needs it to do.

Pros

I like that it keeps the junk from filtering in to the user's mailbox. This helps the user not to have to do the filtering themselves. Also saves the company from the user clicking on something they shouldn't.

Cons

The customer support isn't what it used to be. They seem not to be as responsive as in prior years.

Review Source

Jon S.  
Vice President of Information Technology  
Plastics  
Used the software for: 2+ years

### "Mimecast keeps us protected"

December 18, 2018

4.0

Mimecast has give the IT Department peace of mind and great strengthened our security posture.

Pros

Mimecast has nearly eliminated phishing attacks and malware via email at our company. It has also greatly reduced spam while still allowing users to catch any false positives and get the emails they need without submitting a ticket.

Cons

It was difficult to train users to read through the daily digest, and when some users Blocked certain senders, they didn't realize the wouldn't be able to easily receive future emails from those companies, causing frustrations

Review Source

CR

Cymry R.  
Legal Admin  
Law Practice  
Used the software for: 6-12 months

### "Daily use of this product is easy with lots of tools, resources and options, but we felt lied to. "

February 2, 2018

4.0

It makes sending encrypted emails easy and the recipient a reasonably easy way of getting into the information.

Pros

I love that there is a knowledge center with all kinds of information about how to build and use the system in the way that's right for you. I love that there are tons of classes and webinars not only about how to use this product, but how the product came improve your over all company. Despite the cons listed below, we've enjoyed our daily experience with the service and I think its a reasonable alternative and provides the majority of the services as expected. I think my favorite thing about this service is how much I can figure out how to do on my own, rather then calling and waiting on hold while someone remotes in and figures it out for me.

Cons

When we purchases this product, we explained many times exactly how we wanted it to work and what our firm's needs were. After too many long customer service calls we discovered that the way we wanted the software to work just wasn't what it was designed for. Whats more, apparently its not what anything in the industry is designed to do. Needless to say, we were very frustrated we'd done all this work to transfer us over to using Mimecast for our email security. I felt like if they'd just told us we were wanting the impossible, we would of reformatted our search and very likely still gone with Mimecast, but would of had realistic expectations.

Review Source

VR

Verified Reviewer  
CIO  
Higher Education  
Used the software for: 1-2 years

### "Mimecast Success"

January 9, 2022

4.0

Pros

The phishing and spoofing tools have been the most helpful

Cons

It takes some work to get it up and running.

Alternatives considered

[Proofpoint Email Protection](https://www.capterra.com/p/175873/Proofpoint-Email-Protection/)

Review Source

Elizabeth B.  
Customer Success Program Manager  
Computer Software  
Used the software for: 2+ years

### "MimeCast is easy to use, and blocks spam messages"

February 25, 2021

3.0

Overall, MimeCast is easy to use and easy to setup. I think it is a good email security provider - even though there are some glitches.

Pros

\-Spam blocking -Potential phishing filtering - Ease of use and criteria setup -Works well with Outlook

Cons

\-MimeCast often confuses emails from the same person but different companies (ie, I have two different work emails) and identifies them as phishing, and blocks them from being sent.

Review Source

VR

Verified Reviewer  
Talent Acquisition Specialist  
Research  
Used the software for: 2+ years

### "Works well most of the time"

March 16, 2019

4.0

I would say this is a good solution, but a work in progress nonetheless.

Pros

Ease of use - mimecast makes it super easy to deal with all the annoying spam, and other unwanted messages.

Cons

It has been known to "eat" an occasional good-willed email from someone not currently in my network. Also, emails from services where you wish to reset your password can take a day or more to appear in your MimeCast folder.

Review Source

VR

Verified Reviewer  
Lawyer  
Law Practice  
Used the software for: 2+ years

### "Has saved me from many embarrasing phishing scams!"

March 21, 2019

5.0

Pros

We have had Mimecast installed on our computers at work since I began working here. There has not yet been one phishing scam (other than internal tests) that has slipped through the mimecast security cracks. This is a must have!

Cons

There are times where the plugin fails or it crashes and suddenly disappears from Outlook. I think the outlook integration should be fixed.

Review Source

Manny P.  
.  
Non-Profit Organization Management  
Used the software for: 2+ years

### "Great email Security software"

November 6, 2018

5.0

Mimecast can be made more user-friendly and there could always be more improvements made.

Pros

Ideal for monitoring emails and very simple setup for retrieve old emails. Integrates easily with O365 and user's can simply access their emails at anytime.

Cons

The software every now and then with some user's has ongoing errors with client credentials when passwords are reset, annoying some users.

Review Source

VR

Verified Reviewer  
IT Specialist  
Information Technology and Services  
Used the software for: 6-12 months

### "Mimecast Anti Spam"

December 18, 2018

4.0

Overall very happy with the reduction in junk emails we have seen since starting Mimecast. The options to tailor the settings to filter more or less of certain types of emails has been really helpful. We have also seen a huge decrease in account compromises because the emails just aren't getting through and do not give our users a chance to make mistake, So helpful!

Pros

Mimecast does a much better job screening the spam email then we got from simply using the built in Microsoft spam filters offered by Office 365 for Outlook. We have anti-virus that supposedly helps prevent spam email as well but since we have started using Mimecast we get virtually zero junk emails in our inboxes which is nice.

Cons

The only real complaints I have about Mimecast is the way it sends you emails and asks whether you want to release, block or permit the email that has been placed on hold. This has caused some of our users difficulty and even some of them have reported these emails as spam to us. It is a simple enough process but for some reason our users either don't read them and understand the email or they see it as junk and just ignore them.

Review Source

VR

Verified Reviewer  
Sr. PO  
Marketing and Advertising  
Used the software for: 2+ years

### "Very accurate at filtering out spam"

October 31, 2019

4.0

Accurate for filtering out spam emails, could use a revamp on the dashboard

Pros

Tool is very accurate at filtering out spam emails and delivering them in a single daily digest so user can pick to read any of them if needed

Cons

The user dashboard is hard to get to, and not so user friendly. Email attachments can get lost, specially when coming from outside the company

Review Source

LM

Lisa M.  
Director of Marketing  
Security and Investigations  
Used the software for: Less than 6 months

### "Terrible, clunky, feels like old, outdated technology"

June 29, 2021

2.0

It's supposed to make us more efficient and keep us from clicking "dangerous" links. but honestly, it has caused negative impact on our productivity because of wasted time, missed emails, etc. Granted, I don't have experience with any competitive products, but I can't imagine they are all this bad.

Pros

Very little is good about this product. It does catch some spam, but it misses a ton and it also catches a lot of valid emails.

Cons

Where to begin? First of all, as noted above, this software does a very inconsistent job of catching actual spam. Clearly spammy email regularly makes it through to my inbox, and when messages are held, there is often a long delay before you receive the email telling you there are held messages. That is very problematic especially if you get an email you weren't necessarily expecting...you don't know when it's going to arrive, so you aren't looking for it and may not realize it's been held. Perhaps the worst thing about Mimecast is that everytime you release, block or permit an email, it opens a web window telling you what you just did. What is the point of that? I just click on the button, i don't need you to open a window and take me out of email every single time. I believe every single employee in our company hates Mimecast at least as much as I do.

Review Source

Nathan E.  
Network Analyst  
Law Practice  
Used the software for: 2+ years

### "Great cloud-based email scanning and filtering service."

June 19, 2018

5.0

Highly-scalable and customizable email scanning and filtering in the cloud.

Pros

Highly configurable. Very flexible. Provides multiple layers of protection on both inbound and outbound messages. Includes great tools for tracking and reporting.

Cons

Some of the layout in the admin console can be a bit confusing as to where certain settings are configured.

Review Source

ZB

Zuleika B.  
Account Executive SMB  
Computer Software  
Used the software for: 6-12 months

### "End User review Mimecast security"

November 30, 2023

5.0

Happy to use Reliable Trustworthy Easy to understand

Pros

I had to do no set up; IT team set this up themselves and it actively appears on our emails It required little to none training for me to understand how to use it Reliable

Cons

Sometimes it would flag incorrect attachments, or if I was already in contact with someone it might then flag their email. This is also normal.

Review Source

Christopher Ryan N.  
Sales & Marketing Manager  
Information Technology and Services  
Used the software for: 6-12 months

### "Hit And Miss"

April 6, 2021

3.0

I am a user of the tool within the business - It's not perfect and I appreciate we need to have a level of security - however, the tool has too many issues for me - and I often finding myself cursing it daily.

Pros

I like that it gives me the ability to flag spam over and above just deleting it - I like that I can also access a vault of deleted files.

Cons

It is really hit and miss in regards to spam - lots of stuff still passes through - it also does seem to catch stuff that I actually want. The app sometimes fails to load within outlook for me also at times. the release of your vaulted items is not always instant also and can have a lag on it being released.

Review Source

JN

Janet N.  
Administrative Assistant  
Financial Services  
Used the software for: Less than 6 months

### "Mimecast Keeps Company Email/Data Secure"

August 20, 2018

5.0

The Mimecast Secure Email Gateway has provided us with trust and reliability when looking for a better way to manage our critical information in a more secure way. I trust that Mimecast will continue to do great things for our company. If I could put into better words, I would say that this company is totally worth the investment. I see great changes within my organization since it was launched here. We should to get so many emails that would attempt to get private information through false links. But it has seen been much improved with Mimecast. It has taken the guess out of what is real and what is fake.

Pros

I like that Mimecast has features that protect the integrity of our financial email. It's cyber security features are pretty resilient and effective as we aim to strengthen our cyber security measures. My company has just implemented this into our email systems and so far we have seen a change in the level of spam, spyware, malware and other hacking devices. I think we made a great choice going with Mimecast as it is a terrific company if you are looking for email management.

Cons

The only thing I do not like but am getting used to is the holding of email until it pushes to outlook. I guess this is protocol to verify outside email but it can be quite annoying as I noticed that some email is held until the end of the work day. I did however, learn that I could go into one of the Mimecast tabs in outlook to find emails that are on hold. No big deal.

Review Source

VR

Verified Reviewer  
IT Manager  
Aviation & Aerospace  
Used the software for: 2+ years

### "A very comprehensive email security product "

August 6, 2018

4.0

Pros

Being a SaaS offering, Mimecast can scale with you. The support is fantastic, I have never had a bad experience and their knowledge base is extremely good.

Cons

navigating the web portal at first can be a bit confusing. Outlook add in a bit clunky at times.

Review Source

VR

Verified Reviewer  
Executive Assistant  
Non-Profit Organization Management  
Used the software for: 1-2 years

### "Thoughts on Mime Cast"

June 5, 2019

4.0

Overall I am satisfied with this and ease of using it. It is very important that we communicate with out investors and protect their information.

Pros

That I can use it as plug in/add on to my current email software. I do not like when I have to open browser just to see secured email

Cons

A few times my email would freeze when I sent a secured email/ or I would have to remove and re-add this software when it was not preforming properly

Review Source

JS

Jeffrey S.  
Systems Director  
Wholesale  
Used the software for: 2+ years

### "Best Email Filtering we have found after using the other big names ones"

April 19, 2018

5.0

Freed up ALL IT resources for email filtering and monitoring. Rarely have to touch this product.

Pros

It stops 99.9% of the garbage and not just the obvious. The Phone plug in is easier to use then Apples mail and you can see all the email in it, crazy fast too. The Desktop app workk great with outlook, empowers the users and stops call to IT. Setup was easy and support gave us all the best practices to use.

Cons

The setup can be a bit tough BUT their support will walk you thru any and all issues. Wish there was more SSO options as we have users who would like most software handed to them completely configured and ready to us(no registering).

Review Source

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