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 92% 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

92% 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: February 2026).

Buyer's Guide

Email Archiving

February 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

"It's relatively simple to use."

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

"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 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."

"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."

"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."

More KerioConnect pros

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

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

"We like the content filtering and secure messaging features."

"The solution's performance is good."

"The solution is scalable."

"URL inspection works pretty well."

"It's good, it keeps the spam out."

"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

"KerioConnect continues to improve with regular updates throughout the year. They must be added to the roadmap, which requires approval."

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

"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."

"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"

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

"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."

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

More KerioConnect cons

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

"Mimecast needs to reduce the number of false positive emails; a big pain point for us."

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

"They should improve the cookies management feature."

"Mimecast needs to reduce the number of false positive emails; a big pain point for us."

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

"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 attachment scanning feature doesn't work properly."

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 solution is expensive."

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

"It is a bit 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."

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

"The price of Mimecast Mailbox Continuity is expensive."

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

"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."

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 37% of the time

Zimbra Collaboration vs KerioConnect

Compared 17% of the time

IceWarp vs KerioConnect

Compared 10% of the time

Microsoft Exchange Online vs KerioConnect

Compared 8% of the time

Proofpoint Intelligent Compliance Platform vs KerioConnect

Compared 4% 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 11% 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

February 2026

Download KerioConnect product report

Buyer's Guide

Mimecast Email and Collaboration Threat Protection

February 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: February 2026.

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