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KerioConnect vs Mimecast Advanced Email Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 2, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

KerioConnect
Ranking in Email Archiving
7th
Average Rating
7.2
Reviews Sentiment
7.3
Number of Reviews
11
Ranking in other categories
Email Applications (8th)
Mimecast Advanced Email Sec...
Ranking in Email Archiving
2nd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
44
Ranking in other categories
Email Security (4th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
 

Mindshare comparison

As of August 2026, in the Email Archiving category, the mindshare of KerioConnect is 3.3%, up from 0.9% compared to the previous year. The mindshare of Mimecast Advanced Email Security is 13.6%, down from 22.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Archiving Mindshare Distribution
ProductMindshare (%)
Mimecast Advanced Email Security13.6%
KerioConnect3.3%
Other83.1%
Email Archiving
 

Featured Reviews

MM
Senior Systems Tech/Admin at Samco Software Inc.
A seamless setup ensures smooth communication with comprehensive support
We remain a partner with Sophos and use XG S Firewalls without AWS implementation. We only use Sophos endpoint and Sophos Central. We host some clients on-premise while others we host remotely. The VPN connection is easy and proprietary, so it's not open to any other VPN clients. Communication with other mail servers is seamless. It can communicate with Gmail and Outlook without issues, provided the DNS settings are correct. We monitor our servers and security logs, implementing GeoIP blocking. We frequently block China and India IPs due to brute force attacks on our servers. We have extensive experience with KerioConnect. Backing up and maintaining it is straightforward compared to Microsoft Exchange, making it administrator-friendly. On a scale of 1-10, this solution rates an 8.
Avinash Mishra - PeerSpot reviewer
Manager - EUC at Finthrive
Advanced email filtering has blocked massive spam volumes and prevents unauthorized data leaks
Improvements for Mimecast Advanced Email Security include enhancing the user interface and accessibility, particularly regarding admin capabilities to add or modify user accounts. Streamlining this could improve overall usability and security management for users. Reporting is another area needing improvement in Mimecast Advanced Email Security, as the reports provided are not very easy to decipher. With artificial intelligence being integrated into various tools including Mimecast Advanced Email Security, I believe there is potential to enhance functionality, enabling users to ask specific questions and retrieve concise answers instead of overwhelming data. I choose a nine for Mimecast Advanced Email Security because improvements such as better user interface and artificial intelligence integration features would greatly enhance its usability. While no tool is perfect, these adjustments could greatly elevate Mimecast Advanced Email Security's capabilities.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"As long as the operating is stable, the Kerio connect will be very stable as well, so we don't have any problem with it."
"This solution is our SMB alternative to Exchange, installed for more than forty SMB customers in a Linux environment with all of the collaboration features."
"Kerio Connect is secure, flexible, and easy to control from the user interface."
"We have contacted technical support a handful of times and received some assistance."
"What I like most about Kerio Connect is that it supports ActiveSync, and that is its most critical feature. The solution is also a nice, simple, robust, and stable mail server."
"The user interface is good."
"Kerio Connect is secure, flexible, and easy to control from the user interface. It has many security features able to be controlled from one place, such as anti-spam. I have found it very convenient. Additionally, you can analyze log files and share folders which is helpful."
"The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud."
"The security is pretty good, and that's why we're going to upgrade to an even more advanced package. We used it when we had a power issue, and it works. It has been pretty reliable, and the support has been quite good."
"I recommend Mimecast based on customer requirements and budget."
"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."
"My advice for others looking into using Mimecast Advanced Email Security is that they can strengthen their security very well if they choose to go with it."
"The product's most valuable features are impersonation protection and phishing countermeasures."
"Mimecast Advanced Email Security is a good product and is very stable."
"The solution is stable and reliable. There are no bugs or glitches, and it doesn't crash or freeze."
"The setup was easy."
 

Cons

"I don't particularly like this solution. I would not recommend this solution to others."
"This is just a cost, it's not something that's driving our business forward; it's just foundational."
"The solution could improve the redundancy because we only have one copy of the Kerio Connect server on our hardware. The next step for us is to move to the cloud and if Kerio does not have a cloud version available they should release one"
"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow."
"KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval."
"The search and archiving documentation capabilities need to be stronger."
"Having a native Outlook map integration would make Kerio Connect better."
"It could be simpler to use and install, but I still wouldn't use it because there isn't a compelling use case."
"It was not a good experience due to the fact that our main infrastructure had a problem for that entire time."
"The filtering needs more flexibility."
"I did have a problem with Mimecast. That is why I was looking for an alternative solution because their sender IP address gets poorly rated by Microsoft."
"The feature that should be included is to remove the block on the encrypted files."
"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."
"While it's quick and easy, the initial setup could be more user-friendly."
"The detection rates are an area for improvement."
"External security features need improvement."
 

Pricing and Cost Advice

"KerioConnect has a first-time cost and yearly subscription. It is not expensive."
"The pricing is about $3 per mailbox per month."
"The price of Kerio Connect is better when comparing it to others solutions."
"The solution's pricing depends on how long you plan to keep it because you pay on a per-year basis. You might have a one-time setup cost for something like Microsoft Exchange or a Linux mail server. I'd say this solution is expensive on a per-year basis, almost 2000-3000 dollars annually. It doesn't seem to pay off yet, so we're considering switching to another product."
"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."
"It is a bit expensive."
"The licensing costs are per-user for the product that you get with them."
"It's an expensive solution."
"The customers can select the license packages as per their requirements."
"Its price is in the middle range. It is a structured licensing model where there are various components that you can add or choose to add or not."
"The solution is expensive."
"The product price is moderate. I rate the pricing a five out of ten."
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Manufacturing Company
11%
Construction Company
9%
Outsourcing Company
8%
Computer Software Company
10%
Financial Services Firm
9%
Outsourcing Company
9%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise12
Large Enterprise20
 

Questions from the Community

What is your experience regarding pricing and costs for KerioConnect?
The pricing is very easy to understand. As a partner, we have a monitoring system that informs us when subscriptions expire, allowing us to handle renewals. The pricing is very competitive.
What needs improvement with KerioConnect?
Since KerioConnect is a setup and go solution, everything works on its own. The only administrative tasks required are keeping it up to date, monitoring security logs, and ensuring protection from ...
What is your primary use case for KerioConnect?
Small medium-sized businesses are our primary focus, particularly in warehouse distribution and retail sectors. We are a reseller and purchase directly from Sophos.
What needs improvement with Mimecast Email Security with Targeted Threat Protection?
There is room for improvement since new threats are emerging. Considering the availability of new features would be worthwhile. Mimecast Email Security is somewhat expensive compared to the competi...
 

Also Known As

No data available
Mimecast Email Security with Targeted Threat Protection, Mimecast Web Security, Mimecast Mailbox Continuity, Email and Collaboration Threat Protection
 

Overview

 

Sample Customers

Southern Tier Brewing Company, Innotta, Baustoff + Metall, Hamifleurs, Chanson TV, Ryman Stationery
Hewlett-Packard Company (HP), Cushman and Wakefield, PIB Group, Swissport
Find out what your peers are saying about KerioConnect vs. Mimecast Advanced Email Security and other solutions. Updated: August 2026.
911,549 professionals have used our research since 2012.