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KerioConnect vs Mimecast Email and Collaboration Threat Protection comparison

GFI and Mimecast are both solutions in the Email Archiving category. GFI is ranked #7 with an average rating of 8.8, while Mimecast is ranked #2 with an average rating of 8.3. GFI holds a 2.2% mindshare in EA, compared to Mimecast’s 18.7% mindshare. Additionally, 62% of GFI users are willing to recommend the solution, compared to 92% of Mimecast users who would recommend it.
KerioConnect
Read 11 KerioConnect reviews
  • 1,715 Views
  • 172 Comparison Views
62% willing to recommend
Mimecast Email and Collabor...
Read 39 Mimecast Email and Collaboration Threat Protection reviews
  • 6,951 Views
  • 1,251 Comparison Views
92% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 11, 2026

KerioConnect and Mimecast Advanced Email Security compete in the email solutions category. Mimecast Advanced Email Security holds the upper hand due to its superior security features and ease of deployment.

Features: KerioConnect provides integrated collaboration tools such as calendaring, contacts, and tasks, making it suitable for small to medium-sized businesses. Mimecast Advanced Email Security offers advanced threat protection, comprehensive email security measures, and effective filtering features. Both products are user-friendly and provide integration with common platforms.

Room for Improvement: KerioConnect could enhance its security measures and expand its collaboration features. Mimecast Advanced Email Security might benefit from more cost-effective pricing, improving customization options, and simplifying its user interface.

Ease of Deployment and Customer Service: Mimecast Advanced Email Security provides simple cloud-based deployment with minimal disruption and effective customer service. KerioConnect offers flexibility with both cloud and on-premises deployment options, alongside favorable customer support.

Pricing and ROI: KerioConnect is budget-friendly, offering strong ROI for businesses seeking cost-effective solutions. Mimecast Advanced Email Security, though more expensive, justifies its price with advanced security features and strong threat protection capabilities.

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To learn more, read our detailed KerioConnect vs. Mimecast Email and Collaboration Threat Protection Report (Updated: March 2026).
Buyer's Guide
KerioConnect vs. Mimecast Email and Collaboration Threat Protection
March 2026
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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 (9th)
Mimecast Email and Collabor...
Ranking in Email Archiving
2nd
Average Rating
8.0
Reviews Sentiment
5.9
Number of Reviews
39
Ranking in other categories
Secure Web Gateways (SWG) (19th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)
 

Mindshare comparison

As of March 2026, in the Email Archiving category, the mindshare of KerioConnect is 2.2%, up from 0.8% compared to the previous year. The mindshare of Mimecast Email and Collaboration Threat Protection is 18.7%, down from 25.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Archiving Mindshare Distribution
ProductMindshare (%)
Mimecast Email and Collaboration Threat Protection18.7%
KerioConnect2.2%
Other79.1%
Email Archiving
 

Featured Reviews

MM
Marcelino Mongcal
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.
Read full review
HS
Test Logix
Email Security Engineer at Logic Infosecurity
Experience high detection and user-friendly policies with reliable email security implementation
The system is not user-friendly because you have to create policies that are mapped in a dictionary. As an IT engineer, I understand how it works, but explaining it to another IT person can be difficult. Having more user-friendly dashboards would improve the work experience. In Mimecast Email Security, checking policies in the dictionary or gateway is very complicated, and not everyone understands this process. If you examine the Check Point portal, it's user-friendly with easily accessible tabs that anyone can explore. With Mimecast Email Security, making changes might impact existing mailboxes. The portal is complicated compared to Check Point's user-friendly interface.
Read full review

Quotes from Members

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

Pros

"We have contacted technical support a handful of times and received some assistance."
"The solution is easy to maintain, unlike Exchange. It's easy to create multiple domains and back up and restore if needed. It also has good security features like anti-spam and antivirus."
"The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud."
"We use the solution as a mail server. It connects with Outlook and is used for calendaring and similar tasks."
"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."
"KerioConnect has integration with 365. We can use Outlook, which has its client and can be used with Apple devices. It integrates with the App Store and Microsoft Office. It has a smart router. The spam filtering and antivirus are good."
"The most valuable features are its ease of use, excellent pricing, and it is platform agnostic."
"It's relatively simple to use."
More KerioConnect pros
"The initial setup is very straightforward."
"It offers an easy initial setup."
"It does a good job for us, and its admin console is easy to use."
"I have been satisfied with Mimecast Email Security as a good solution."
"The setup was easy."
"It's really quite user-friendly. In terms of technical superiority and the product itself, there are no complaints. It is really cutting edge."
"Due to our specialized use case, that HIPAA dictionary really comes in handy."
"It has all the features required for distribution, such as the ability to mail."
More Mimecast Email and Collaboration Threat Protection pros
 

Cons

"KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval."
"KerioConnect is stable as long as you use a strong password."
"It could be simpler to use and install, but I still wouldn't use it because there isn't a compelling use case."
"We cannot compete with them because they're fully integrated with their applications."
"You cannot integrate with other services like Google Docs, Google Assistant, Google Calendar, etc."
"The search and archiving documentation capabilities need to be stronger."
"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow. They could make it faster to get onto the web interface without so much load time. It's just slow with Outlook, however, for some reason."
"I would like to see better support from their support team."
More KerioConnect cons
"I'd like to have better support from the product in the future."
"The reaction time between a new threat being identified and Mimecast picking it up needs to be narrowed a bit."
"They should improve the cookies management feature."
"We discussed the phishing aspect, the DNS system, and the key rotation."
"Certainly, the primary area needing improvement is Mimecast's customer support. Our experience as Mimecast customers has been less than satisfactory. Even when raising a priority ticket, the response time is unacceptably long, often taking around five to six hours. This level of service is disappointing. Additionally, there have been recurring service disruptions in the UK region, leading to extended email delays due to various service issues. This year alone, we've encountered such problems on approximately four occasions."
"The feature that should be included is to remove the block on the encrypted files."
"External security features need improvement."
"As a user, the user interface of the management console could be upgraded, for example."
More Mimecast Email and Collaboration Threat Protection cons
 

Pricing and Cost Advice

"KerioConnect has a first-time cost and yearly subscription. It is not expensive."
"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."
"The price of Kerio Connect is better when comparing it to others solutions."
"The pricing is about $3 per mailbox per month."
"The price of Mimecast Mailbox Continuity is expensive."
"It is a bit expensive."
"For what it is, the product is overpriced."
"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."
"I'm always going to say the price needs to be lower, but it's reasonable."
"The product price is moderate. I rate the pricing a five out of ten."
"The solution is expensive."
"It's an expensive solution."
More Mimecast Email and Collaboration Threat Protection pricing and cost advice
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Computer Software Company
10%
Manufacturing Company
10%
Performing Arts
7%
Computer Software Company
13%
Financial Services Firm
8%
Manufacturing Company
6%
Comms Service Provider
5%
 

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 Enterprise11
Large Enterprise13
 

Questions from the Community

What do you like most about KerioConnect?
The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud.
See all answers
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.
See all answers
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 ...
See all answers
What do you like most about Mimecast Email Security with Targeted Threat Protection?
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.
See all answers
What is your experience regarding pricing and costs for Mimecast Email Security with Targeted Threat Protection?
Do you know anything about the pricing and cost of the Mimecast Email Security?
See all answers
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...
See all answers
 

Comparisons

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Microsoft Exchange vs KerioConnect
Compared 35% of the time
Zimbra Collaboration vs KerioConnect Logo
Zimbra Collaboration vs KerioConnect
Compared 16% of the time
IceWarp vs KerioConnect Logo
IceWarp vs KerioConnect
Compared 10% of the time
Microsoft Exchange Online vs KerioConnect Logo
Microsoft Exchange Online vs KerioConnect
Compared 7% of the time
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Check Point Harmony Email & Collaboration vs Mimecast Email and Collaboration Threat Protection Logo
Check Point Harmony Email & Collaboration vs Mimecast Email and Collaboration Threat Protection
Compared 20% of the time
Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection Logo
Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection
Compared 11% of the time
Microsoft Defender for Office 365 vs Mimecast Email and Collaboration Threat Protection Logo
Microsoft Defender for Office 365 vs Mimecast Email and Collaboration Threat Protection
Compared 10% of the time
Barracuda Email Protection vs Mimecast Email and Collaboration Threat Protection Logo
Barracuda Email Protection vs Mimecast Email and Collaboration Threat Protection
Compared 7% of the time
Abnormal Security vs Mimecast Email and Collaboration Threat Protection Logo
Abnormal Security vs Mimecast Email and Collaboration Threat Protection
Compared 5% of the time
More Mimecast Email and Collaboration Threat Protection Competitors
 

Product Reports

Buyer's Guide
KerioConnect
February 2026
KerioConnect reportDownload KerioConnect product report
Buyer's Guide
Mimecast Email and Collaboration Threat Protection
February 2026
Mimecast Email and Collaboration Threat Protection reportDownload Mimecast Email and Collaboration Threat Protection product report
 

Also Known As

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

Overview

Kerio Connect, a messaging and collaboration solution, meets the needs of small and mid-sized businesses while offering a robust feature lineup. Business users enjoy support for their favorite email client and easy web-based access. Kerio Connect is highly stable—so you can focus on business rather than unexpected downtime and recovery.

GFI

Mimecast Advanced Email Security offers advanced features like sandboxing, email archiving, and phishing protection. It's known for integration with Microsoft 365 and user-friendly admin management, making it a robust choice for secure communications.

Focused on safeguarding emails, Mimecast Advanced Email Security integrates seamlessly with Microsoft 365, providing features such as sandboxing, spam filtering, and email archiving. It delivers comprehensive protection against phishing, identity threats, and impersonation attempts. Administrators benefit from the ability to monitor external communications and customize configurations, enhancing email security. Users appreciate the intuitive admin console and responsive support team. Although it faces challenges in threat detection rates and administration complexity, its capabilities in email monitoring, spam filtering, and URL inspection remain valued by enterprises seeking reliable email security that supports compliance needs.

What key features should users explore?
  • Sandboxing: Analyzes attachments in a secure environment to detect threats.
  • Email Archiving: Provides secure long-term storage of emails for compliance.
  • Spam Filtering: Prevents unsolicited emails from clogging the inbox.
  • URL Inspection: Checks links in emails for malicious content.
  • Phishing Protection: Guards against deceptive tactics to protect sensitive data.
What benefits can impact ROI?
  • Regulatory Compliance: Facilitates adherence to standards such as HIPAA.
  • Integration: Enhances existing systems with seamless Microsoft 365 integration.
  • Support: Offers a responsive support team to resolve issues promptly.
  • Email Security: Improves threat prevention with effective spam and phishing protections.

Mimecast Advanced Email Security is implemented across industries to protect against email threats like phishing, spam, and malicious attachments. It serves as both a gateway and an archiving tool, supporting compliance in healthcare and finance by offering features like URL protection and data loss prevention. Enterprises leverage its capabilities to secure inbound and outbound communications effectively.

Mimecast
 

Sample Customers

Southern Tier Brewing Company, Innotta, Baustoff + Metall, Hamifleurs, Chanson TV, Ryman Stationery
Azizi Developments, Affinity Credit Union, Aftercare, Al Abbar Group
Buyer's Guide
KerioConnect vs. Mimecast Email and Collaboration Threat Protection
March 2026
Free Report: KerioConnect vs. Mimecast Email and Collaboration Threat Protection
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We monitor all Email Archiving reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.