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...

Comparison Buyer's Guide

Download the report

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

Download the complete report

Helped 896,387 peers since 2012

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

"It's relatively simple to use."

"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."

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

"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 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 user interface is good."

"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."

More KerioConnect pros

"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."

"I have been satisfied with Mimecast Email Security as a good solution."

"The security on offer is very good."

"The product is good. To date, we have not faced any challenges."

"I would rate Mimecast Email Security a nine out of ten."

"The piece that is most valuable from the Mimecast standpoint will be the sandboxing feature."

"We're now certain business-critical mail is perfectly protected in multiple ways."

"Mimecast Mailbox Community is an email gateway required for every organization, regardless of size."

More Mimecast Email and Collaboration Threat Protection pros

Cons

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

"KerioConnect is stable as long as you use a strong password."

"We cannot compete with them because they're fully integrated with their applications."

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

"We are considering switching to Microsoft Exchange. One reason is that it doesn't improve our workflow and doesn't integrate well with Microsoft 365 applications."

"I don't particularly like this solution. I would not recommend this solution to others."

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

"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"

More KerioConnect cons

"The price of the solution is expensive. It can improve by reducing the price."

"The system is not user-friendly because you have to create policies that are mapped in a dictionary."

"From an administrative point of view, Mimecast is a little bit cumbersome and difficult."

"The solution should include more AI features instead of Mimecast's more general static configuration tooling."

"The interface isn't the best. How everything works on the back end is confusing."

"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."

"They should improve the cookies management feature."

"I'd like to have better support from the product in the future."

More Mimecast Email and Collaboration Threat Protection cons

Pricing and Cost Advice

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

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

"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 Mimecast Mailbox Continuity is expensive."

"It is a bit expensive."

"The product price is moderate. I rate the pricing a five out of ten."

"It's an expensive solution."

"Two subscription options are currently offered: monthly and yearly. My suggestion is to opt for the yearly subscription as it can give some discount. The pricing isn't high as other cloud solutions are pricier than Microsoft's offerings."

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

"The solution is expensive."

"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."

More Mimecast Email and Collaboration Threat Protection pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which Email Archiving solutions are best for your needs.

See recommendations

896,387 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Comms Service Provider

15%

Manufacturing Company

Computer Software Company

Retailer

Computer Software Company

12%

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 23% of the time

Zimbra Collaboration vs KerioConnect

Compared 13% of the time

IceWarp vs KerioConnect

Compared 10% 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 17% 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.

DOWNLOAD NOW

896,387 professionals have used our research since 2012.

See our KerioConnect vs. Mimecast Email and Collaboration Threat Protection report.

See our list of best Email Archiving vendors.

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.