MimeCast Email Security Reviews in April 2025: User Ratings, Pros & Cons

"An excellent Email Security and Threat Protection solution."

What do you like best? The granularity with which we can manage users, groups of users and how they interact with the system by setting up notifications of quarantines, journals of held emails or even just tagging on email delivered to their mailbox depending on their level of sophistication or work function and needs. We also appreciate the ability to watch for outgoing PII or PHI in order to place holds on potential information leaving our environment. This is only a little bit of what ...

"Consistent performance and excellent support"

What do you like best? Good support for SAAS is imperative, and Mimecast support exceeds that in the experience we have had. The feature we use are reliable and we see new features added regularly. Any issues in service is met with thorough and timely information as well as there being almost no interruption in services provided in three years. The products we use are completely configurable for our needs and there seems to be no shortage in customization to meet requirements we have ...

"Mimecast does a lot of things great with a few minor annoyances"

What do you like best? I like how Mimecast gives you a lot of control over various policies and definitions. What do you dislike? There's a few things that can be annoying... For example, the Greylisting feature requires previously unknown senders to retry messages to verify RFC compliance. A lot of OTP servers are not RFC compliant apparently which causes those messages to be rejected. These emails come from randomized email addresses, so you're unable to add them to you permitted senders ...

"Mimecast Email Protection is robust tool and has saved our company time and energy."

What do you like best? What I like best about Mimecast Email Protection is the granularity which you can apply policies for different types of email. On top of the normal spam scoring feature we also leverage the Impersonation Protection, Attachment Protection and Anti Spoofing Protection to guard against malicious email attacks. What do you dislike? One of our biggest frustration is having multiple policies set up in the Impersonation Protection that apply to specific executive users but ...

"Reliable and secure"

What do you like best? To my knowledge, we've never had an outage in the two years we've been using Mimecast Email Security. Most of the email attacks we've encountered, Mimecast has had a solution available; i.e. Impersonation Protect. What do you dislike? Most of my time I spend in Mimecast is to troubleshoot email delivery issues. I find it difficult to almost impossible to determine what module blocked a particular message. Similarly, while it has improved somewhat, I still have to use ...

"Effective but tough to administer"

What do you like best? When well tuned Mimecast blocks an awful lot of problem emails, to the point where I don't worry much anymore about spam and phishing. What do you dislike? The Mimecast administration web pages are slow and poorly organized. What should be simple adjustments often require many steps, and the interface is curiously fragmented. What problems are you solving with the product? What benefits have you realized? The number one problem I had to solve was stopping phishing ...

"Mimecast Email Security with Threat Protection Review"

What do you like best? Portfolio is comprehensive and provides strong security for my users. As an admin the setup is easy and allows for lots of customizations and integrations. What do you dislike? Support can be slow to respond and the only way to get support quickly is to call in. What problems are you solving with the product? What benefits have you realized? better protection on inbound and outbound email for malware and spam. Mimecast does a very good job of keeping spam from ...

"Pretty effective. Not sure if worth the admin overhead."

What do you like best? Definitely is a solid wall against unwanted and dangerous email. Dashboards are clear and easy to see data What do you dislike? Administration is very clunky, unclear. Simple modifications to policy or exceptions require much more time and effort than competitors. As an experienced SysAdmin (though new to this tool), I needed 2x support calls to solve a firedrill. What problems are you solving with the product? What benefits have you realized? Almost zero spam hitting ...

"It's Come A Long Way!"

What do you like best? I have seen the number of issues caused by not having an email security service drop to almost nothing. There are some emails that make it through, but a quick trip to the blocked senders list and making sure end users are educated to contact me if they notice something that doesn't look right. Always better to be safe that sorry. Also getting to see the volume of threats that are prevented by quickly navigating to the Threat dashboard and the amazing visibility into ...

"Mimecast Email Security with Threat Protection"

What do you like best? Easy to navigate user interface, conversion of common business documents (PDF/DOCX/XLSX) to safe formats. What do you dislike? There are no downsides of using the product. Recommendations to others considering the product: When evaluating other products against Mimecast I used the following criteria... * Cloud-Based – Look for one that has a “DR mode” or “maintenance mode” so you are have your mail server down, the cloud service will still accept mail and queue it for ...