Microsoft 365 vs. Mimecast Advanced Email Security

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Microsoft 365
Score 8.7 out of 10
N/A
Microsoft 365 (formerly Office 365) is a Microsoft Cloud subscription service that includes Microsoft Office products (Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access). The software can be installed across multiple devices and ensures that users always have the most up-to-date version of the included Office applications.
$5
Per User Per Month
Mimecast Advanced Email Security
Score 8.6 out of 10
N/A
The Mimecast Secure Email Gateway is a messaging security option with anti-spam / anti-malware, data loss prevention, large file send, and other features, from UK company Mimecast.N/A
Pricing
Microsoft 365Mimecast Advanced Email Security
Editions & Modules
Business Basic
$5.00
Per User Per Month
Individual
$5.84
*Per Month
Business - Apps
$8.25
Per User Per Month
Enterprise - F3
$10.00
Per User Per Month
Business Standard
$12.50
Per User Per Month
Business Premium
$20.00
Per User Per Month
Enterprise - E3
$32.00
Per User Per Month
Enterprise - E5
$57.00
Per User Per Month
No answers on this topic
Offerings
Pricing Offerings
Microsoft 365Mimecast Advanced Email Security
Free Trial
NoYes
Free/Freemium Version
NoNo
Premium Consulting/Integration Services
NoNo
Entry-level Setup FeeNo setup feeNo setup fee
Additional Details*When billed annually.
More Pricing Information
Community Pulse
Microsoft 365Mimecast Advanced Email Security
Considered Both Products
Microsoft 365
Chose Microsoft 365
It is one of a kind in my eyes.
Chose Microsoft 365
BTE, this search bar is not the best; I couldn't find Google Suite. In any case, it's challenging to find a suite with advanced tools that serves as an office. Google comes close, no one uses OpenOffice (hyperbole), and there isn't much else to use. If you add to that the …
Chose Microsoft 365
In my opinion Microsoft 365 is the most complete out of the bunch because of the cloud and desktop apps, the easy expandability it brings in combination with Azure and Entra/Intune. I must say that Google Workspace is a close contender but the desktop apps are less complete in …
Chose Microsoft 365
Thunderbird is very nice tool but in my case not used because I have several issues with his calendar.
Zoom is very good tool, providing you low band usage and good video and sound quality.
I have tested OpenOffice but not nice UI experience.
Chose Microsoft 365
Its very user-friendly, collaborative and efficient that boosts productivity using cloud tools. their security is strong and it provides data protection. There are regular updates that shields us from attackers too. It offers a wealth of learning resources, including tutorials, …
Chose Microsoft 365
All the features in Microsoft Office 365 are better than any other product in the market except the protection feature. This is the only weakness in Microsoft 365 where had to stop their protection and buy Proofpoint Advanced Threat Protection.

The Exchange Online feature is …
Chose Microsoft 365
Device compatibility and enterprise level voice isn't as readily available with Google Voice.
Chose Microsoft 365
Google sheets is better for sharing and collaborative editing. Versioning of the same file is also one of Google Sheets strong points.
Microsoft 365 is better for working with local files. It is much easier to store the file in multiple places and backup multiple versions in …
Chose Microsoft 365
I really don't know of anything that is a competitor for Microsoft 365 - that's both good and bad.
Chose Microsoft 365
I used to like Google more than Microsoft because I used it more, but now I think they are very similar. I am able to use both on my phone, both have Clouds, and both have synced calendars, documents, and sheets. The reason I use Microsoft is [that] my company uses it, and I …
Chose Microsoft 365
Google Sheets, doesn't give me the same flexibility that Excel does. I have been frustrated when trying to work in Sheets to build complex spreadsheets. It is easier to manipulate and the spreadsheet can still be shared with a team member when cooperation needs to be had in …
Chose Microsoft 365
Compared to Docs & Sheets, Microsoft Word, Excel, and Sheets offer more functionality. Notepad is almost always pre-installed on Microsoft Word-enabled computers. This alternative to Microsoft Word isn't as robust, but it's free. Microsoft Publisher is incompatible with Adobe …
Chose Microsoft 365
I was not in charge of choosing Microsoft 365, but I have used Google Drive extensively in the past. Google Drive and OneDrive are VERY similar. you can hook them up to your file explorer and share links, auto-sync files, and access them on your mobile/tablet, etc. Google Docs …
Chose Microsoft 365
Microsoft 365 (formerly Office 365) and Google Drive have a very similar structure. Both have apps that can provide the same performance. For example, Google Docs and Microsoft Word are alike. Likewise, Google Sheets and Excel, Google Meet and Teams, Google Slide and …
Chose Microsoft 365
While I do like Microsoft, I miss using Google. I think it’s faster and just a little less clunky. However, OneNote and Teams are a huge advantage for the way we use Microsoft products at my school.
Chose Microsoft 365
None -- we always used some version of Office.
Chose Microsoft 365
Zoho does a decent job but is lacking in the refinement of its product. The cost point is much lower so this is not really unacceptable if you realize that when purchasing. The feature uses are harder to navigate and making changes requires a little more digging as they are …
Chose Microsoft 365
From a management standpoint, Microsoft 365 is far easier to use than Exchange. No, it is not as robust but for day-to-day use, I would choose Microsoft 365 every time.
Chose Microsoft 365
Because 365 connects most of my work apps such as OneDrive, SharePoint, and Teams.
Chose Microsoft 365
I have apple products at home and they work well for what we use them for but the problem is not all products work with Mac products. My main design software will export file formats that are 100% compatible with Microsoft but not Mac. This plays a huge role in deciding what …
Chose Microsoft 365
Microsoft 365 is far superior to Google Sheets in terms of functionality and ease of use. Google Workspace facilitates document sharing. [Microsoft] 365, on the other hand, is more powerful in terms of the functions it supports, such as Excel and Power BI. Though Microsoft 365 …
Chose Microsoft 365
Microsoft 365 has very good security features and is one of the reliable product when it comes to security. It is very user friendly which makes it a popular choice amongst all users. Its frequently enhanced versions with new features added each time makes it a hot product in …
Chose Microsoft 365
Personally I would prefer Google Workspace because it integrates better with the Android based tools that I already use. I also like how Google's Docs, Sheets, and Slides online functionality is their focus rather than an addon to get to the cloud. Google Workspace's sharing …
Chose Microsoft 365
We did not, we knew exactly what we wanted and needed.
Chose Microsoft 365
Both Google and Dropbox have programs for creating content. They can get the job done but there is a reason Microsft 365 is an industry standard. You can pull together a bunch of different apps and try to get them to communicate together if you want. But it will be a headache. …
Mimecast Advanced Email Security
Chose Mimecast Advanced Email Security
Mimecast offers the same or better features with great pricing. It is definitely a value for money product, that constantly provide improved and new features. Also the learning academy allows for self-paced training of administrators.
Chose Mimecast Advanced Email Security
Mimecast Advanced Email Security is FAR superior. Sophos practically gave us the email for free and we still didn't want it. Sophos also does not do both Gateway and API properly. Mimecast Advanced Email Security's AI-Powered net is next level.
Chose Mimecast Advanced Email Security
Because we already were customers.
Chose Mimecast Advanced Email Security
Microsoft 365 Business Premium, Barracuda Email Security Gateway, SonicWall Email Security Appliances, Cisco Meraki MX and Cisco Routers
Chose Mimecast Advanced Email Security
In my opinion, Mimecast Advanced Email Security outpaces Microsoft in terms of usability and reduction of spam and phishing emails. Mimecast Advanced Email Security was cheaper than Proofpoint, but I suspect Proofpoint is doing better on staying current with trends than …
Chose Mimecast Advanced Email Security
Less customizable than Mimecast Advanced Email Security. Less policy options
Chose Mimecast Advanced Email Security
Since implementing Mimecast Advanced Email Security there hasn't been a need for us to investigate other solutions. We do however use KnowBe4's PhishER as an end-user tool for reporting emails that get through.
Chose Mimecast Advanced Email Security
The product is more straightforward with minimal knowledge; everything has a clear, concise layout and makes sense. There are help tips on all the definitions and policies, and the support team quickly responds if required.
Chose Mimecast Advanced Email Security
Abnormal isn't a gateway, but instead performs similar security features via M365 apis. It is very "identity" focused which helps with more modern scams.

M365 has some email security tools, but they are not as customizable or reportable. Mimecast tools far exceed them.
Chose Mimecast Advanced Email Security
Proofpoint ATP offered strong threat detection and forensics, but it was more complex to manage and significantly more expensive. Microsoft 365 Defender had solid native integration with M365, but its filtering and impersonation protection weren’t as strong out of the box, …
Chose Mimecast Advanced Email Security
I have never really used Mimecast or Sophos, which was an on-prem mail filtering tool - Now use 365 Defender services alongside Mimecast.
Chose Mimecast Advanced Email Security
Mimecast Advanced Email Security had a reputation in the industry we went with, and the price was very competitive at the time.
Chose Mimecast Advanced Email Security
The reason we went with Mimecast over other products was for the partnership. We heard from our businesses who utilize Mimecast of their great partnerships and relationships they build with their customers. We meet with our representative quarterly to discuss any trends in the …
Chose Mimecast Advanced Email Security
We find that Mimecast is superior to other email filters with admin console page and support line help.
Chose Mimecast Advanced Email Security
Fortinet is a premise pased system modified for SaaS use. we were not impressed with the UI either.

Abnormal was great and likely hasd smarter filtering. We did not like the price.
Chose Mimecast Advanced Email Security
Mimecast stacks up really well against these products. The price of Mimecast made it hard to say no to.
Chose Mimecast Advanced Email Security
It stacks up very well against it as it offers much more functionality and better detection.
Chose Mimecast Advanced Email Security
It has a better interface and is easy to use and understand. It also has better customer service, which is easy to reach. It is also more commercialized, which makes finding products, solutions, and add-ons better and easier to navigate and purchase.
Chose Mimecast Advanced Email Security
At the time, Mimecast was the leading industry standard, and we needed a better solution, so it was only natural. After checking out our options, I chose the tool that worked for me the best. Mimecast gave me a platform that did everything i was already working on via one …
Chose Mimecast Advanced Email Security
Proofpoint Email Protection and Abnormal Security
Features
Microsoft 365Mimecast Advanced Email Security
Secure Email Gateway
Comparison of Secure Email Gateway features of Product A and Product B
Microsoft 365
-
Ratings
Mimecast Advanced Email Security
8.0
Ratings
4% below category average
Anti-malware00 Ratings8.50 Ratings
Customizability00 Ratings8.50 Ratings
Data Loss Protection00 Ratings6.50 Ratings
Threat Detection00 Ratings8.40 Ratings
Sandboxing00 Ratings8.00 Ratings
End-to-End Encryption00 Ratings8.60 Ratings
Management Tools00 Ratings7.70 Ratings
Best Alternatives
Microsoft 365Mimecast Advanced Email Security
Small Businesses
Google Workspace
Google Workspace
Score 9.1 out of 10
Zoho Mail
Zoho Mail
Score 9.3 out of 10
Medium-sized Companies
Google Workspace
Google Workspace
Score 9.1 out of 10
Avanan
Avanan
Score 9.4 out of 10
Enterprises
Microsoft 365 Business Premium
Microsoft 365 Business Premium
Score 8.8 out of 10
Avanan
Avanan
Score 9.4 out of 10
All AlternativesView all alternativesView all alternatives
User Ratings
Microsoft 365Mimecast Advanced Email Security
Likelihood to Recommend
7.8
(0 ratings)
8.5
(0 ratings)
Likelihood to Renew
9.5
(0 ratings)
8.8
(0 ratings)
Usability
7.2
(0 ratings)
8.2
(0 ratings)
Availability
-
(0 ratings)
8.0
(0 ratings)
Performance
-
(0 ratings)
8.0
(0 ratings)
Support Rating
8.9
(0 ratings)
6.0
(0 ratings)
Implementation Rating
9.0
(0 ratings)
10.0
(0 ratings)
Configurability
-
(0 ratings)
9.0
(0 ratings)
Ease of integration
-
(0 ratings)
8.8
(0 ratings)
Product Scalability
-
(0 ratings)
9.0
(0 ratings)
Vendor post-sale
-
(0 ratings)
8.0
(0 ratings)
Vendor pre-sale
-
(0 ratings)
8.0
(0 ratings)
User Testimonials
Microsoft 365Mimecast Advanced Email Security
Likelihood to Recommend
I usually recommend Microsoft 365 to my clients to keep them away from the Exchange server (sorry!) Our business has a lot of issues with exchange email functions and copy machines. I always recommend they download the desktop version and use the online version as needed. You never know when you will be without an internet connection, but you can usually trust your laptop will have a decent charge, and you can still be productive! Let it sync when the powers are back on - or your connection is alive.
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Mimecast's advanced email security remains the number one security tool available for any organization. You will be ahead of the game before anything gets in and users start clicking. Users are often the ones who can disclose sensitive data and compromise the organization and its brand.
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Pros
  • keeps me extremely organized. It is so easy to link calendars, emails, and documents.
  • keeps me well connected. It is so easy to send a quick message on teams or send an email to a group (for example, my particular team within the company).
  • easy to use. Everything is straightforward, making it easy to find an answer to a question. There is even a search option to figure out how to do something within Microsoft.
Read full review
  • Simplicity: Once set up, Mimecast Advanced Email Security is easy to use, intuitive, and simple. This reduces onboarding time with new employees.
  • Robust Audit Trail: Being able to see what happened with specific emails, why things happened, and who was responsible for them helps to reduce troubleshooting time as well as improving overall email observability.
  • Clean Interface: Mimecast Advanced Email Security is a Swiss-Army-Knife of email security. There are many different configurations and complex rules that can be implemented. To make this manageable Mimecast Advanced Email Security has implemented a simple and clean UI. Being able to favorite commonly used features makes a huge difference in usability.
  • Simple SSO Integration: This seems like a no-brainer, but its odd to see how many SaaS products either don't support SSO, or make it so complicated and convoluted that setup and maintenance becomes a fully time job.
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Cons
  • I wish it was a little simpler to integrate things from one Microsoft Feature into another one. Perhaps I just don't know the tricks for that yet...after all these years of using it.
  • I didn't like how it defaulted to saving the document automatically with changes, like Google Docs, but it seems that has now changed, and is better now.
  • Generally, I really like how the suite works as is.
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  • I would like to see some additional improvement around the attachment protection, specifically what may be getting caught and what types of files are attempting to be delivered via email by impersonators.
  • The Targeted Threat Protection is a great product, and I wish there was a dashboard for this service where we could easily see the types of emails and/or links that have been caught as part of the protection module that could be shared with executives.
  • Finally, I feel that the phishing protection is great and honestly don't believe there should be much improvement needed there.
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Likelihood to Renew
I am completely satisfied with the product, and helps me on a daily basis. I do not the exact cost (it is not a cheap suite) but on the medium and long term the return on investment is guaranteed.
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I gave a 9/10 rating because with the 1 limited resources needs a bit of experience to work on the dashboard, and then Strong protection policies, reliable email continuity and proactive threat intelligence.
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Usability
It being the default office suite means it's user experience and idioms are things that everyone is generally very used to and fluent with.
The sharing is relatively simple, being directly hooked into Entra AD, and expiry being a first class concern.
It's usability decreases at scale, with multiple people simultaneously making edits can make documents unusable.
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As an admin it's fine, the console has some slightly annoying quirks (having to to go all the way back to the top when making changes rather than being able to just go up one level for example) and the object orientated nature of it takes some getting your head around how it thinks. But generally speaking it's decent enough once you've used it for a couple of hours
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Reliability and Availability
No answers on this topic
Overall, it's very good, but I do remember a few times in the past year we have seen some availability issues.
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Performance
No answers on this topic
Pages need to consistently load quickly. Sometimes good, sometimes not.
Read full review
Support Rating
Over the past 8 years of using Microsoft 365, I have noticed that they change vendors often. This always leads to a poor experience in the beginning, then levels out after some time for the company to get things worked out. As a customer, it is really frustrating because I don't have time when something isn't working to have them "look into my issue" and get back with me. They have even closed a ticket I specifically told them to keep open. Your applications are only as good as the support.
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When calling them you get best in the world customer services but as previously mentioned their online community and capabilities are a bit lacking. They want you to log into their portal to see updates on issues (vs. using a public facing service) and I rarely find the answers to my issues in electronic format. Their online presence is only helpful with the simplest of issues.
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In-Person Training
No answers on this topic
We did not have in-person training. All was done through meetings and on phone.
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Online Training
No answers on this topic
Training was good from Mimecast as well as the Mimecast knowledgebase.
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Implementation Rating
Everything works and I use it all the time.
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Easy to set up and configure, but did have Mimecast assistance.
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Alternatives Considered
BTE, this search bar is not the best; I couldn't find Google Suite. In any case, it's challenging to find a suite with advanced tools that serves as an office. Google comes close, no one uses OpenOffice (hyperbole), and there isn't much else to use. If you add to that the recent collaborative functionalities, nothing really stacks up or compares; this has everything a person in an office (oversimplifying) needs to get work done.
Read full review
Mimecast Advanced Email Security is FAR superior. Sophos practically gave us the email for free and we still didn't want it. Sophos also does not do both Gateway and API properly. Mimecast Advanced Email Security's AI-Powered net is next level.
Read full review
Scalability
No answers on this topic
The solution continues to grow and add features.
Read full review
Return on Investment
  • Microsoft 365 has really been effective and cost saving option for our organization in terms of managing the mailboxes, collaboration and messaging.
  • There is multiple must have features which comes all together in one package and therefore is cost effective.
  • The only negative impact according to me is its inability to protect the environment or domain from external attacks effectively.
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  • We've had to beef up training and other email security tools because we get too many spam and phishing emails still with Mimecast Advanced Email Security in place. This is costing us at least an extra 15% annually in staff time and tooling than it should.
  • We have been pleased with data loss prevention with Mimecast Advanced Email Security, it does identify PII and auto-encrypts emails with PII effectively.
  • It does have the ability to integrate with other security tools via API, which is beneficial.
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ScreenShots