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 8.7, while Mimecast is ranked #2 with an average rating of 8.3. GFI holds a 2.7% mindshare in EA, compared to Mimecast’s 15.4% 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

1,960 Views
274 Comparison Views

62% willing to recommend

Mimecast Email and Collabor...

Read 39 Mimecast Email and Collaboration Threat Protection reviews

8,336 Views
1,500 Comparison Views

92% willing to recommend

KerioConnect

Mimecast Email and Collabor...

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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.

To learn more, read our detailed KerioConnect vs. Mimecast Email and Collaboration Threat Protection Report (Updated: April 2026).

Buyer's Guide

KerioConnect vs. Mimecast Email and Collaboration Threat Protection

April 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

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

Ranking in other categories

Secure Web Gateways (SWG) (15th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)

Mindshare comparison

As of May 2026, in the Email Archiving category, the mindshare of KerioConnect is 2.7%, up from 0.9% compared to the previous year. The mindshare of Mimecast Email and Collaboration Threat Protection is 15.4%, down from 23.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Archiving Mindshare Distribution
Product	Mindshare (%)
Mimecast Email and Collaboration Threat Protection	15.4%
KerioConnect	2.7%
Other	81.9%

Email Archiving

Featured Reviews

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

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

"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."

"The most valuable features are its ease of use, excellent pricing, and it is platform agnostic."

"It's relatively simple to use."

"The most valuable features are security and privacy because you installed it on your server, within your company premises, not in the cloud."

"Backing up and maintaining it is straightforward compared to Microsoft Exchange, making it administrator-friendly."

"We have contacted technical support a handful of times and received some assistance."

"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."

"Kerio Connect is secure, flexible, and easy to control from the user interface."

More KerioConnect pros

"Mimecast has been in the market for a long time; it's a good tool if you want to simplify your operations and a good tool for removing on-prem appliances that otherwise you would need to do with the protection that Mimecast provides."

"What I like about the integration is that it is directly into Microsoft 365, users can use their Microsoft 365 credentials to log into the portal and access their mail."

"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."

"The solution's performance is good."

"URL inspection works pretty well."

"Due to our specialized use case, that HIPAA dictionary really comes in handy."

"The solution offers good technical support."

"Its administration console is very easy to use. The administration console is absolutely important because you interact with the platform through it."

More Mimecast Email and Collaboration Threat Protection pros

Cons

"I would like to see better support from their support team."

"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow."

"The solution could improve the redundancy because we only have one copy of the Kerio Connect server on our hardware."

"This is just a cost, it's not something that's driving our business forward; it's just foundational."

"Most of our clients use Outlook and Kerio Connect. Occasionally, Kerio can be a bit slow."

"You cannot integrate with other services like Google Docs, Google Assistant, Google Calendar, etc."

"The search and archiving documentation capabilities need to be stronger."

"Having a native Outlook map integration would make Kerio Connect better."

More KerioConnect cons

"The solution is expensive in comparison to similar solutions."

"The lock in is very, very tight. It is impossible to move out of Mimecast to a different product, like Proofpoint or 365 ATP, and keep the chain of custody for every email that I've archived."

"The detection rates are an area for improvement."

"They should improve the cookies management feature."

"Lately, Mimecast's outbound mail servers have been regularly blocklisted by spam filters. That didn't happen a few years back, but it seems to be a more frequent problem these days. When a server is blocklisted, it means all of my outgoing mail ends up in the recipient's junk mail. That affects my reputation and business confidence."

"While it's quick and easy, the initial setup could be more user-friendly."

"The solution is complex and not easy to use."

"The feature that should be included is to remove the block on the encrypted files."

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 price of Kerio Connect is better when comparing it to others solutions."

"The pricing is about $3 per mailbox per month."

"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 licensing costs are per-user for the product that you get with them."

"Compared to the other products in the market, it is neither cheap but nor very expensive. I would rate it somewhere in the middle, 5 out of 10."

"The product has good pricing in terms of return on investment."

"It's an expensive solution."

"Compared to the other solutions in the market, Mimecast Email Security with Targeted Threat Protection's pricing is fine."

"The customers can select the license packages as per their requirements."

"On a scale of one to ten, where one is cheap, and ten is expensive, I rate the pricing a ten."

"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."

More Mimecast Email and Collaboration Threat Protection pricing and cost advice

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Top Industries

By visitors reading reviews

Comms Service Provider

14%

Manufacturing Company

Computer Software Company

Retailer

Computer Software Company

11%

Financial Services Firm

Comms Service Provider

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	2

By reviewers
Company Size	Count
Small Business	19
Midsize Enterprise	11
Large Enterprise	13

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.

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 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.

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

What is your primary use case for Mimecast Email Security with Targeted Threat Protection?

I have been working with Mimecast Email Security.

See all answers

Comparisons

Microsoft Exchange vs KerioConnect

Compared 25% of the time

Zimbra Collaboration vs KerioConnect

Compared 14% of the time

IceWarp vs KerioConnect

Compared 11% of the time

Open-Xchange vs KerioConnect

Compared 9% of the time

Barracuda Message Archiver vs KerioConnect

Compared 4% of the time

More KerioConnect Competitors

Check Point Email Security (formerly Harmony Email & Collaboration) vs Mimecast Email and Collaboration Threat Protection

Compared 18% of the time

Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection

Compared 10% of the time

Microsoft Defender for Office 365 vs Mimecast Email and Collaboration Threat Protection

Compared 9% of the time

Barracuda Email Protection vs Mimecast Email and Collaboration Threat Protection

Compared 6% of the time

Abnormal Security vs Mimecast Email and Collaboration Threat Protection

Compared 4% of the time

More Mimecast Email and Collaboration Threat Protection Competitors

Product Reports

Buyer's Guide

KerioConnect

May 2026

Download KerioConnect product report

Buyer's Guide

Mimecast Email and Collaboration Threat Protection

May 2026

Mimecast Email and Collaboration Threat Protection report

Download 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

KerioConnect delivers easy-to-use and secure email, calendar, and collaboration tools compatible with Office, Apple, and ActiveSync. Cost-effective and flexible, it suits on-premise installations, especially for SMBs seeking privacy and security.

KerioConnect offers a comprehensive email server experience with minimal resource needs and effective spam filtering. Compatible across platforms, it supports Outlook, enabling organizations to manage corporate communications efficiently. Its ability to host multiple domains makes it suitable for sectors like warehouse distribution and retail, with installation options that enhance security and privacy. However, faster Outlook integration, improved MS Teams and CRM system integration, and AI functionalities are sought after by users. Some demand a cloud version, Linux support, and better documentation. Still, KerioConnect remains a reliable choice for those needing on-premise capabilities.

What are KerioConnect's Key Features?

Ease of Use: Simplified interface for seamless navigation.
Robust Security: Advanced protection measures to safeguard data.
Spam Filtering: Efficiently reduces unwanted emails.
Platform Compatibility: Integrates with Office, Apple, and ActiveSync.
Log Analysis: Offers detailed insights for server management.
Multiple Domain Support: Manages diverse domains with ease.

What Benefits Should Users Expect?

Cost Efficiency: Lowers operational costs compared to alternatives.
Resource Minimization: Requires minimal system resources.
Deployment Flexibility: Allows tailored on-premise installations.
Enhanced Security: Provides privacy through internal hosting options.
Reliable Support: Access to reseller services from Sophos.

KerioConnect is widely utilized in SMBs across sectors like retail and warehouse distribution for its capability to handle multiple domains and integrate with Outlook for communication management. Resellers offer it as a dependable on-site email management solution, letting businesses maintain oversight and security control.

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

April 2026

Free Report: KerioConnect vs. Mimecast Email and Collaboration Threat Protection

Find out what your peers are saying about KerioConnect vs. Mimecast Email and Collaboration Threat Protection and other solutions. Updated: April 2026.

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