Mimecast Advanced Email Security Reviews & Product Details

Mimecast's AI-powered Advanced Email Security blocks the most dangerous email-borne attacks, from phishing and ransomware to social engineering, payment fraud, and impersonation. With Mimecast's Advanced Email Security you get: - The industry's best protection: Block email-based threats with AI-powered, industry-leading detection trusted by more than 42,000 customers. - Deployment flexibility: Choose your deployment option - email security delivered with or without a gateway. - AI-powered, world-class detection: Apply the power of AI, machine learning, and social graphing to make security smarter and empower employees.

Product Website

Seller

Mimecast

Languages Supported

German, English

Product Description

Mimecast Email Security with Targeted Threat Protection solution that offers comprehensive, multi-layered email security and content controls.

Overview by

Alexa Austin

Discussions

Mimecast Advanced Email Security Community

Value at a Glance

Averages based on real user reviews.

Time to Implement

2 months

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Mimecast Advanced Email Security Integrations

(4)

Verified by Mimecast Advanced Email Security

Mimecast Advanced Email Security Media

Official Downloads

(3)

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Interactive Demo

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Mimecast Advanced Email Security Reviews (315)

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Ajay S.

Senior System Engineer

Mid-Market (51-1000 emp.)

12/16/2025

Business partner of the seller or seller's competitor, not included in G2 scores.

"Robust Email Security Made Simple and Effective"

4.5/5

What do you like best about Mimecast Advanced Email Security?

Mimecast Advanced Email Security stands out for its strong protection against phishing, malware and impersonation attacks while remaining easy to manage. The interface is intuitive, making daily monitoring, policy updates and threat investigation straightforward even for small security teams.

Implementation is smooth and well-documented, with minimal disruption to existing mail flow. Integration with M465 is seamless and features like URL protection, attachment sandboxing and impersonation protection work effectively out of box. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

Mimecast Advanced Email Security is a powerful platform, the interface can feel complex at times, especially for new administrators. Some settings are deeply nested, which can make advanced policy tuning and troubleshooting less intuitive. Review collected by and hosted on G2.com.

What problems is Mimecast Advanced Email Security solving and how is that benefiting you?

Mimecast Advanced Email Security addresses critical email-based threats such as phishing, spear- phishing, malware, ransomware and business email compromise. By providing advanced threat detection, URL and attachment analysis and impersonation protection, it significantly reduces the risk of users falling victim to malicious emails. Review collected by and hosted on G2.com.

Igor B.

Customer engineer

Mid-Market (51-1000 emp.)

11/18/2025

"Mimecast, a Great Mail security tool"

4/5

What do you like best about Mimecast Advanced Email Security?

The features that stand out most are its Targeted Threat Protection, and the ease of use it provides. The TTP suite is excellent at neutralizing most attacks, including Impersonation Protection which accurately flags and blocks Business Email Compromise and CEO fraud attempts that traditional filters miss. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

At times, the Administration user interface tends to be slow and unresponsive, which can be frustrating. Review collected by and hosted on G2.com.

What problems is Mimecast Advanced Email Security solving and how is that benefiting you?

Targeted Threat Protection: Features like Impersonation Protection and advanced AI/machine learning stop social engineering attacks that manipulate employees. This directly translates to reduced financial loss and prevented breaches from wire transfer fraud or credential theft Review collected by and hosted on G2.com.

Akhil M.

Manager

Mid-Market (51-1000 emp.)

12/10/2025

"Effortless Spam Blocking and Enhanced Email Security"

5/5

What do you like best about Mimecast Advanced Email Security?

it easy to identify unknown email and block spam and avoid breach Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

sometimes it block genuine user and take time Review collected by and hosted on G2.com.

tali k.

Threat Intelligence Analyst

Enterprise (> 1000 emp.)

11/18/2025

"Consistent, Low-Noise Phishing Protection with Smart Features"

5/5

What do you like best about Mimecast Advanced Email Security?

Consistent, low‑noise protection from phishing and impersonation—smart URL rewriting and attachment sandboxing with clear reporting and simple policy control. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

URL rewriting can break links, the admin UI/reporting feel clunky with limited customization, and quarantine workflows sometimes delay legitimate mail. Review collected by and hosted on G2.com.

What problems is Mimecast Advanced Email Security solving and how is that benefiting you?

It closes the biggest email gaps—phishing/BEC, spoofing, and malware in links/attachments—by filtering and detecting impersonation before messages reach users. The result is fewer incidents and account takeovers, less SOC/helpdesk noise, faster investigations via centralized reporting/quarantine, better compliance posture, and more confident users. Review collected by and hosted on G2.com.

Mandla N.

IT manager

Small-Business (50 or fewer emp.)

8/2/2024

"One of the best email security out there"

4.5/5

What do you like best about Mimecast Advanced Email Security?

This platform does help with email protection from phishing emails, and it's a great tool in flagging spam emails and blocking it.

The ability for administrators to review a suspicious email before allowing it to be delivered to the users is such a great feature Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

The URL protection is too aggressive. Sometimes its a legit URL, but the system blocks it.

Every once in a while the users are prompted to enroll devcie when they have already did that Review collected by and hosted on G2.com.

inayat S.

Network Administrator | Infrastructure, Network & Cybersecurity

Enterprise (> 1000 emp.)

11/20/2025

"AI-Powered Security with Outstanding Threat Protection"

4.5/5

What do you like best about Mimecast Advanced Email Security?

AI-Powered, Multi-Layer Detection

Strong Phishing / Impersonation Protection

Excellent Spam & Virus Defense

Deployment Flexibility

Integrated Platform Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

Steep Learning Curve / Complexity

Aggressive Out-of-the-Box Settings / False Positives Review collected by and hosted on G2.com.

aqib j.

IT Administrator

Mid-Market (51-1000 emp.)

7/7/2025

"Mimecast Advanced Email Security"

5/5

What do you like best about Mimecast Advanced Email Security?

Its provide a best securtiy feature to handel internal and external emails. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

I dont think is there any think which I dislike about this tool because its always help us to incerase security featurs. Review collected by and hosted on G2.com.

What problems is Mimecast Advanced Email Security solving and how is that benefiting you?

Protection against phishing and spear-phishing attacks: It blocks malicious emails and impersonation attempts, reducing the risk of credential theft and fraud.

Defense against malware and ransomware: It scans attachments and links to prevent harmful content from reaching users, protecting our systems and data.

Spam and graymail filtering: It ensures our mailboxes stay cleaner and employees remain productive by minimizing unwanted or irrelevant emails.

Data loss prevention: It helps enforce security policies to prevent sensitive information from being leaked or sent in error. Review collected by and hosted on G2.com.

Verified User in Electrical/Electronic Manufacturing

Enterprise (> 1000 emp.)

10/1/2025

"Great when we started with them, declined quickly after implementation"

1.5/5

What do you like best about Mimecast Advanced Email Security?

Included email signatures in their offering for free as well as the tabbed interface made switching between consoles very easy! Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

The product was 'ok' but not the best at catching everything. The real reason for the decline was in support. Getting customer service on the phone during outages was horrible and took entirely too long in a SEV-A scenario. Review collected by and hosted on G2.com.

Andrew V.

IT Engineer

Small-Business (50 or fewer emp.)

6/17/2025

"Reliable email Secuity For modern Business"

3.5/5

What do you like best about Mimecast Advanced Email Security?

The use of Data Loss Presentation which prevents sensitive data leaks is one of the things I like about Mimecast.

Mimecast integrates very well with office365 Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

The initial setup is a bit complex, things like Policies and connectors are a bit challenging to get right Review collected by and hosted on G2.com.

Patrick L.

CIO

Mid-Market (51-1000 emp.)

6/30/2025

"Mimecast is awesome for email phishing/spam"

5/5

What do you like best about Mimecast Advanced Email Security?

How easy it is to find emails or block them Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

If a emails gets rejected then we would have to allow them then have that user resend the email which can get annoying to the user side resending documents a couple times Review collected by and hosted on G2.com.