KerioConnect vs Mimecast Email and Collaboration Threat Protection comparison

KerioConnect vs. Mimecast Email and Collaboration Threat Protection

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Helped 889,855 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) (17th), Office 365 Protection (2nd), Secure Email Gateway (SEG) (3rd)

Mindshare comparison

As of April 2026, in the Email Archiving category, the mindshare of KerioConnect is 2.6%, up from 0.8% compared to the previous year. The mindshare of Mimecast Email and Collaboration Threat Protection is 16.7%, down from 24.7% 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	16.7%
KerioConnect	2.6%
Other	80.7%

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

"The user interface is good."

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

"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."

"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."

"We use the solution as a mail server. It connects with Outlook and is used for calendaring and similar tasks."

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

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

More KerioConnect pros

"It is our spam filter, phishing filter, and executive impersonation filter."

"I have always found Mimecast to be very responsive; for example, if we see something come through, they address it and it helps to sort out the issues."

"The initial setup is very straightforward."

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

"The initial setup is easy."

"Mimecast has some good support services in place."

"We like Mimecast's spam filtering. The email signature feature is also a big plus for our users."

"URL inspection works pretty well."

More Mimecast Email and Collaboration Threat Protection pros

Cons

"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"

"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."

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

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

"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."

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

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

More KerioConnect cons

"Technical support has been slower than it was in the past, likely due to the pandemic."

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

"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."

"I don't think it's ideally suited for maybe a smaller business environment, like, for example, for companies with less than 100 seats."

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

"The solution's console interface was recently changed for the admins, but the previous one was much better because we could open tabs on it."

"The installation is not so straightforward."

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

More Mimecast Email and Collaboration Threat Protection cons

Pricing and Cost Advice

"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."

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

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

"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."

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

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

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

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

"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%

Manufacturing Company

Computer Software Company

Performing Arts

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 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.

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 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?

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...

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

I have been working with Mimecast Email Security.

Microsoft Exchange vs KerioConnect

Comparisons

Compared 27% of the time

Zimbra Collaboration vs KerioConnect

Compared 15% of the time

IceWarp vs KerioConnect

Compared 10% of the time

Open-Xchange vs KerioConnect

Compared 8% of the time

Barracuda Message Archiver vs KerioConnect

Compared 3% of the time

More KerioConnect Competitors

Check Point 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

KerioConnect

Download KerioConnect product report

Mimecast Email and Collaboration Threat Protection

Download Mimecast Email and Collaboration Threat Protection product report

Mimecast Email and Collaboration Threat Protection 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

KerioConnect vs. Mimecast Email and Collaboration Threat Protection