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 18.6% mindshare. Additionally, 62% of GFI users are willing to recommend the solution, compared to 93% of Mimecast users who would recommend it.

KerioConnect

Read 11 KerioConnect reviews

1,647 Views
148 Comparison Views

62% willing to recommend

Mimecast Email and Collabor...

Read 39 Mimecast Email and Collaboration Threat Protection reviews

6,401 Views
1,152 Comparison Views

93% willing to recommend

KerioConnect

Mimecast Email and Collabor...

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.

To learn more, read our detailed Email Archiving Report (Updated: January 2026).

Buyer's Guide

Email Archiving

January 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) (20th), Office 365 Protection (3rd), Secure Email Gateway (SEG) (4th)

Mindshare comparison

As of February 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 18.6%, down from 28.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Email Archiving Market Share Distribution
Product	Market Share (%)
Mimecast Email and Collaboration Threat Protection	18.6%
KerioConnect	2.2%
Other	79.2%

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

"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."

"It's relatively simple to use."

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

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

"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."

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

More KerioConnect pros

"In terms of efficacy, Proofpoint is better than Mimecast, though it's a little difficult to manage."

"It does a good job for us, and its admin console is easy to use."

"The initial setup is very straightforward."

"In the current environment that the world is in, everyone is trying to hack everyone else, so Project+ definitely helps a lot there."

"It offers an easy initial setup."

"The setup was easy."

"It has all the features required for distribution, such as the ability to mail."

"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."

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. 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."

"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."

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

"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"

"It could be simpler to use and install, but I still wouldn't use it because there isn't a compelling use case."

"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."

More KerioConnect cons

"The detection rates are an area for improvement."

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

"The price could be better, it should be reduced."

"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."

"The attachment scanning feature doesn't work properly."

"As for areas for improvement within Mimecast Web Security, I believe there is quite a lot that can be improved."

"Many of our users complain that the system is blocking too many attachments. It's a good practice from a security perspective, but our users think Mimecast is doing too much. It might be something we'll have to adjust."

"Its pricing can be improved. It is a bit expensive."

More Mimecast Email and Collaboration Threat Protection cons

Pricing and Cost Advice

"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."

"KerioConnect has a first-time cost and yearly subscription. It is not expensive."

"I'm always going to say the price needs to be lower, but it's reasonable."

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

"The solution is expensive."

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

"The price of Mimecast Mailbox Continuity is expensive."

"For what it is, the product is overpriced."

"It's an expensive solution."

"It is a bit expensive."

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

11%

Manufacturing Company

Retailer

Computer Software Company

13%

Financial Services Firm

Manufacturing Company

Comms Service Provider

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 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

Microsoft Exchange vs KerioConnect

Compared 38% of the time

Zimbra Collaboration vs KerioConnect

Compared 18% of the time

IceWarp vs KerioConnect

Compared 10% of the time

Microsoft Exchange Online vs KerioConnect

Compared 8% of the time

Superhuman vs KerioConnect

Compared 3% of the time

More KerioConnect Competitors

Check Point Harmony Email & Collaboration vs Mimecast Email and Collaboration Threat Protection

Compared 20% of the time

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

Compared 12% of the time

Proofpoint Email Protection vs Mimecast Email and Collaboration Threat Protection

Compared 11% 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 5% of the time

More Mimecast Email and Collaboration Threat Protection Competitors

Product Reports

Buyer's Guide

KerioConnect

January 2026

Download KerioConnect product report

Buyer's Guide

Mimecast Email and Collaboration Threat Protection

January 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

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

Find out what your peers are saying about Microsoft, Mimecast, Barracuda Networks and others in Email Archiving. Updated: January 2026.

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