OpenText Core Email Threat Protection Reviews & Product Details

OpenText Core Email Threat Protection is a cloud-based email security solution that stops phishing, ransomware, malware, and business email compromise before they reach users. It uses real-time threat intelligence, AI-driven detection, and multi-layered filtering to block both known and unknown threats across inbound and outbound email. Suspicious messages are automatically analyzed, quarantined, or removed, reducing the risk of breaches and user exposure. Key benefits: Stops advanced threats early – phishing, malware, ransomware, and zero-day attacks AI-driven detection – identifies evolving and unknown threats in real time Protects users and data – prevents credential theft and account compromise Automated response – quarantine, remediation, and policy enforcement Cloud-native and easy to deploy – no hardware, minimal setup Built for Microsoft 365 and Google Workspace We remove email as the primary attack vector and gives IT teams strong, automated protection without added complexity.

Seller

OpenText

Discussions

OpenText Core Email Threat Protection Community

Overview by

Michael Schneider

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User Insights

Average based on 6 real user reviews.

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UC

Verified User in Civil Engineering

Mid-Market (51-1000 emp.)

9/30/2025

"Doesn't Catch Obvious Phishing Emails, Customer Support Is Awful"

0/5

What do you like best about OpenText Core Email Threat Protection?

It's cheap. One can also block a domain. Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

It doesn't catch emails that are obviously phishing attempts. Some of the subjects of emails AppRiver hasn't caught:

Alert: Update Your Microsoft 365 Password Before Expiry[random character string]

[Company Name] HR: Employee Guidelines Ref ID: [Random characters]

[Company Name] sent 3rd Quater Performance-Based Review and Annual Raise Ref :[random character string]

Payroll Adjustment Q2 Performance Review and Employment Compensation Ref [random characters] [Date]

The filtering functionality is very limited, so even if there's an obvious pattern, one can't create any rule to prevent it. Responses are slow and unhelpful. It actually seems like it's been getting worse lately, though it's hard to tell. Review collected by and hosted on G2.com.

Current UserValidated ReviewerSource: Organic

AG

Verified User in Government Administration

Mid-Market (51-1000 emp.)

Updated 5/1/2025

Originally submitted 3/1/2024

"Reduce Inbox Clutter"

4/5

What do you like best about OpenText Core Email Threat Protection?

On average, AppRive Email Threat Protection filters out around 25% of our incoming email as spam or malware. Users are notified daily of any messages that have been blocked and given the option to view and release blocked messages that are legit. In addition, they can also request global whitelist entries or, if given permission, manage their own, personal whitelists. Our end-users find using this service easy to understand and use. When needed, the customer support is always easy to work with and quick to answer questions. Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

By default, only the past 7 days of filtered messages are maintained. We were able to request 14-day retention but that is the maximum offered. It would be nice to have a longer retention options. Review collected by and hosted on G2.com.

What problems is OpenText Core Email Threat Protection solving and how is that benefiting you?

AppRiver Email Threat Prevention greatly reduces the amount of spam delivered to our inboxes. It allows the end users to view held messages safely and release them to their inbox if needed. Users can also request whitelist entries or manage their own, personal whitelists if permitted to do so. From an administrator's perspective, you are given the ability to tweak the filtering system significantly to meet your needs. Review collected by and hosted on G2.com.

G2 IconCurrent UserValidated ReviewerIncentivizedSource: G2 invite

SH

Scott H.

Network Administrator

Mental Health Care

Mid-Market (51-1000 emp.)

12/20/2023

"Never have to worry about SPAM"

5/5

What do you like best about OpenText Core Email Threat Protection?

I ahve been with AppRiver's Email Threat Protection since I came on board with El Hogar. I have not once had to lose sleep over spam. There are a few that get through their filters if you don't lock them down but 90% of SPAm is weeded out. The Customer Support is excelent and I typically get right through to an agent when help is needed. I really appreciate that. Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

When first configuring the settings you can accidently catch too much and you have to spend a few days tweeking it to meet your needs. Once you do that, it is set it and forget it. Review collected by and hosted on G2.com.

What problems is OpenText Core Email Threat Protection solving and how is that benefiting you?

The weakest link into a network is the end user email and AppRiver Email Threat Protection is a great shield. You can never catch everything but in the 7 years I've been here I have only had a few real threats slip past the filters and I was able to immediately adjust the filters to stop future threats. Review collected by and hosted on G2.com.

Current UserValidated ReviewerIncentivizedSource: G2 invite

SL

steven L.

IT Consultant

Information Technology and Services

Mid-Market (51-1000 emp.)

3/22/2023

"Perfect"

5/5

What do you like best about OpenText Core Email Threat Protection?

I like Appriver because It has a lot of features that the end user cant touch Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

The only thing will be making it a little more user friendly Review collected by and hosted on G2.com.

Current UserValidated ReviewerIncentivizedSource: Organic Review from User Profile

PD

Philip D.

Director Of Information Technology

Mid-Market (51-1000 emp.)

8/24/2021

"Appriver's filters do a decent job of blocking threats but need to improve"

3.5/5

What do you like best about OpenText Core Email Threat Protection?

Appriver helps keep our organization secure by blocking thousands of malicious emails every day. Our users receive frequent reports on quarantined items so that they can request the admin to release any messages they need. This keeps us safe and makes sure we don't miss vital communication that may have been blocked. Better safe than sorry. Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

The filters can miss dangerous emails from time to time and when these messages get through you cannot recall them from the mailboxes without paying for extra features from Appriver. I think this service should be included in the basic threat protection package because it is vital for security. Review collected by and hosted on G2.com.

Recommendations to others considering OpenText Core Email Threat Protection:

Configure it so that your users get quarantined messages reports very often so that important messages that were quarantined don't get missed. Review collected by and hosted on G2.com.

What problems is OpenText Core Email Threat Protection solving and how is that benefiting you?

Spam and malicious email is an enormous problem and Appriver helps us manage it. It saves time for the IT dept. by automatically filtering messages and removing them and alerts us when we need to intervene. The portal is easy to use and support has been great. Review collected by and hosted on G2.com.

Current UserValidated ReviewerIncentivizedSource: G2 invite

AI

Verified User in Investment Management

Small-Business (50 or fewer emp.)

11/3/2021

"Full-featured but a bear to administer"

3/5

What do you like best about OpenText Core Email Threat Protection?

AppRiver appears to have all of the features I expect from an email security gateway. Review collected by and hosted on G2.com.

What do you dislike about OpenText Core Email Threat Protection?

The administration web interface is terrible, possibly the worst I've seen in this market segment. Navigation is fragmented, clumsy and without any flow. Review collected by and hosted on G2.com.

Recommendations to others considering OpenText Core Email Threat Protection:

I recommend that anyone who needs email threat protection consider alternatives to AppRiver. No matter who good the protection might prove to be managing this service is difficult. Review collected by and hosted on G2.com.

What problems is OpenText Core Email Threat Protection solving and how is that benefiting you?

AppRiver is our spam, malware and phishing protection. Considering the deluge of threats arriving via email every company requires an email security gateway, and for us that's AppRiver. Review collected by and hosted on G2.com.