--- title: OpenText Core Email Threat Protection Reviews meta\_title: 'OpenText Core Email Threat Protection Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how OpenText Core Email Threat Protection works for a business like yours. aggregate\_rating: rating\_value: 3.4 review\_count: 6 scale: '5' date\_modified: '2026-07-17' parent\_category: name: Email Security url: https://www.g2.com/categories/email-security --- ### OpenText Core Email Threat Protection Pros and Cons: Top Advantages and Disadvantages #### Quick AI Summary Based on G2 Reviews Generated from real user reviews Users are frustrated with **ineffective email filtering** , as it fails to catch obvious phishing attempts consistently. [(1 mentions)](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282380&qs=pros-and-cons#reviews) Users are frustrated by **limited reporting** , as it fails to catch obvious phishing emails and lacks filtering options. [(1 mentions)](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282388&qs=pros-and-cons#reviews) Users report **poor customer support** with slow and unhelpful responses for troubleshooting email threats effectively. [(1 mentions)](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282384&qs=pros-and-cons#reviews) Users experience **slow performance** with OpenText Core Email Threat Protection, leading to missed phishing emails and unhelpful support. [(1 mentions)](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282398&qs=pros-and-cons#reviews) ### Top Cons or Disadvantages of OpenText Core Email Threat Protection ##### 1. Email Filtering Issues Users are frustrated with **ineffective email filtering** , as it fails to catch obvious phishing attempts consistently. [ See 1 mentions ](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282380&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 0.0/5 "Doesn't Catch Obvious Phishing Emails, Customer Support Is Awful" 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 ##### 2. Limited Reporting Users are frustrated by **limited reporting** , as it fails to catch obvious phishing emails and lacks filtering options. [ See 1 mentions ](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282388&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 0.0/5 "Doesn't Catch Obvious Phishing Emails, Customer Support Is Awful" 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 ##### 3. Poor Customer Support Users report **poor customer support** with slow and unhelpful responses for troubleshooting email threats effectively. [ See 1 mentions ](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282384&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 0.0/5 "Doesn't Catch Obvious Phishing Emails, Customer Support Is Awful" 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 ##### 4. Slow Performance Users experience **slow performance** with OpenText Core Email Threat Protection, leading to missed phishing emails and unhelpful support. [ See 1 mentions ](https://www.g2.com/products/opentext-core-email-threat-protection/reviews?filters%5Bsentiment_snippet%5D=2282398&qs=pros-and-cons#reviews) See Related User Reviews ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") U Verified User Mid-Market (51-1000 emp.) 0.0/5 "Doesn't Catch Obvious Phishing Emails, Customer Support Is Awful" 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 ## Top-Rated Alternatives [ ![Proofpoint Core Email Protection](https://images.g2crowd.com/uploads/product/hd_favicon/8adf2eedd5616a9f5e200c4520f6d30d/proofpoint-core-email-protection.svg "Proofpoint Core Email Protection") Proofpoint Core Email Protection 4.6/5(601) ](https://www.g2.com/products/proofpoint-core-email-protection/reviews) [ ![Mimecast Advanced Email Security](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_bc9c82db6b8fbc86566d8d997b2c9413/mimecast-advanced-email-security.jpg "Mimecast Advanced Email Security") Mimecast Advanced Email Security 4.4/5(348) ](https://www.g2.com/products/mimecast-advanced-email-security/reviews) [ ![Microsoft Defender for Office 365](https://images.g2crowd.com/uploads/product/hd_favicon/a8a99a96fda235658139f710592f8a53/microsoft-microsoft-defender-for-office-365.svg "Microsoft Defender for Office 365") Microsoft Defender for Office 365 4.5/5(299) ](https://www.g2.com/products/microsoft-microsoft-defender-for-office-365/reviews) [ View All Alternatives ](https://www.g2.com/products/opentext-core-email-threat-protection/competitors/alternatives) ![Verified User in Civil Engineering](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Civil Engineering") 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. What problems is OpenText Core Email Threat Protection solving and how is that benefiting you? It's supposed to be solving spam and phishing emails. At this point, I'm not sure it is benefiting me. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerSource: Organic ![Verified User in Government Administration](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Government Administration") AG Verified User in Government Administration Mid-Market (51-1000 emp.) 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. Show More Our network of Icons are G2 members who are recognized for their outstanding contributions and commitment to helping others through their expertise.G2 Icon 5/1/2025 Current UserValidated ReviewerIncentivizedSource: G2 invite ![Scott H.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Scott H.") 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. Show More 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. What problems is OpenText Core Email Threat Protection solving and how is that benefiting you? Too much spam/junk mail getting to the end users. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: Organic Review from User Profile ![Philip D.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Philip D.") 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. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![Verified User in Investment Management](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Investment Management") 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. 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