AppRiver from OpenText (formerly from Zix from 2019, which was acquired by OpenText), is a hosted messaging gateway and security platform featuring anti-spam and email encryption / data loss capability.
In my experience the McAfee Security for Email Servers is well suited for the all the types of organization and their employees who main concern is security for their mailing application. As they need to protect the sensitive data sent and receive through mail and also wants to protect their employee and organizations sensitive data. Also, I don't see any scenario where McAfee Security for Email Server is not suited as every organizations wants to protect their data and employee from the many cyber attacks.
AppRiver is great for both small and large organizations. Small businesses are unlikely to have much if any technical support staff available to them, for which AppRiver would be a great help. Likewise for large companies, having AppRiver can save your tech support team from dealing with basic, common, and repetitive application support, and allowing them to better focus on more important tasks at hand.
They do not support DMARC and DKIM at this time and I don't know when or if they ever will.
Their SPF record is not great and can possibly cause issues, at least that is what my support company has told me.
Scanning of links in emails seems super limited and or non-existent. THings get through with completely bad malicious all the time and I assume they are not scanning them or they don't have a proper AV on their end.
Once a domain is whitelisted any bad emails that may be spoofing that email domain are let through and no other filters apply to the emails. It's frustrating to have to white list 20+ individual email addresses from a company and not be able to white list just the domain and not feel secure doing that.
AppRiver's live support is above what I expected, and I use it exclusively. I always get a professional, courteous, and knowledgeable tech that is easy to understand within a few minutes of placing a call. If you do have to leave a message they have always promptly returned my call.
The McAfee Security for Email Servers is very robust and compact against many newly generated cyber threats. Also the McAfee Security for Email Servers is very easy to operate and understand. The great thing about the McAfee Security for Email Servers is it's ability to determine the threat pattern and disabled it before it occurs and causes the problem in daily operations is too good.
AppRiver requires the least amount of management time, the pricing is better and the minimums are such that almost all SMB's won't be buying shelfware. If you are an MSP, become a partner and you will see spam problems become a thing of the past.
The layer of protection provided by the McAfee Security for Email Servers from cyber attacks is on of the highlight of it.
It is the one of the best solution to prevent your organizations employee to fall prey to the attacks like phishing, spamming and many more.
The most incredible thing McAfee Security for Email Servers does is that it can be great in dealing with the attacks and detection of cyber threats even before they impact your business.