Mimecast Advanced Email Security Pros and Cons: Top 5 Advantages and Disadvantages

Quick AI Summary Based on G2 Reviews

Generated from real user reviews

Users value the advanced AI-driven threat protection of Mimecast, significantly enhancing email security and user awareness. (40 mentions)

Users find Mimecast exceptionally easy to implement and manage, appreciating its seamless integration and reliability for email security. (36 mentions)

Users commend Mimecast for its robust email security, effectively preventing spoofing and protecting against dangerous attachments. (28 mentions)

Users praise the powerful security features of Mimecast Advanced Email Security, enhancing protection and ease of use. (22 mentions)

Users appreciate the spam blocking capability of Mimecast, effectively preventing breaches and ensuring email security. (22 mentions)

Users note the complexity of Mimecast's interface, making it challenging for new administrators to fully utilize. (17 mentions)

Users face email filtering issues with Mimecast, struggling to locate emails and manage extensive policies effectively. (16 mentions)

Users often face email policy configuration issues, leading to time-consuming adjustments and frustrations with usability. (16 mentions)

Users find the false positives in Mimecast frustrating, as they can delay important communications and require manual intervention. (13 mentions)

Users report ineffective detection of legitimate emails, leading to disruptions and time-consuming manual interventions. (13 mentions)

5 Pros or Advantages of Mimecast Advanced Email Security

1. Email Security

Users value the advanced AI-driven threat protection of Mimecast, significantly enhancing email security and user awareness.

See 40 mentions

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Vishnu G.

Mid-Market (51-1000 emp.)

4.5/5

"Effective Email Security with Room for Configuration Improvement"

What do you like about Mimecast Advanced Email Security?

I like using Mimecast Advanced Email Security for both email security and email archiving. It effectively scans all emails, including attachments, whi

Aaron V.

Mid-Market (51-1000 emp.)

3.5/5

"Customizable Email Security Policies That Protect Against Many Threats"

What do you like about Mimecast Advanced Email Security?

It offers a wide range of email security policies with a strong level of customization. We’re able to protect our environment against many different t

2. Ease of Use

Users find Mimecast exceptionally easy to implement and manage, appreciating its seamless integration and reliability for email security.

See 36 mentions

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Ajay S.

Mid-Market (51-1000 emp.)

4.5/5

"Robust Email Security Made Simple and Effective"

What do you like 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 mana

Akhil M.

Mid-Market (51-1000 emp.)

5.0/5

"Effortless Spam Blocking and Enhanced Email Security"

What do you like about Mimecast Advanced Email Security?

it easy to identify unknown email and block spam and avoid breach

3. Security

Users commend Mimecast for its robust email security, effectively preventing spoofing and protecting against dangerous attachments.

See 28 mentions

See Related User Reviews

Aaron V.

Mid-Market (51-1000 emp.)

3.5/5

"Customizable Email Security Policies That Protect Against Many Threats"

What do you like about Mimecast Advanced Email Security?

It offers a wide range of email security policies with a strong level of customization. We’re able to protect our environment against many different t

Ajay S.

Mid-Market (51-1000 emp.)

4.5/5

"Robust Email Security Made Simple and Effective"

What do you like 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 mana

4. Features

Users praise the powerful security features of Mimecast Advanced Email Security, enhancing protection and ease of use.

See 22 mentions

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Ajay S.

Mid-Market (51-1000 emp.)

4.5/5

"Robust Email Security Made Simple and Effective"

What do you like 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 mana

Igor B.

Mid-Market (51-1000 emp.)

4.0/5

"Mimecast, a Great Mail security tool"

What do you like 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

5. Spam Blocking

Users appreciate the spam blocking capability of Mimecast, effectively preventing breaches and ensuring email security.

See 22 mentions

See Related User Reviews

Ajay S.

Mid-Market (51-1000 emp.)

4.5/5

"Robust Email Security Made Simple and Effective"

What do you like 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 mana

Akhil M.

Mid-Market (51-1000 emp.)

5.0/5

"Effortless Spam Blocking and Enhanced Email Security"

What do you like about Mimecast Advanced Email Security?

it easy to identify unknown email and block spam and avoid breach

5 Cons or Disadvantages of Mimecast Advanced Email Security

1. Complexity

Users note the complexity of Mimecast's interface, making it challenging for new administrators to fully utilize.

See 17 mentions

See Related User Reviews

Ajay S.

Mid-Market (51-1000 emp.)

4.5/5

"Robust Email Security Made Simple and Effective"

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

inayat S.

Enterprise (> 1000 emp.)

4.5/5

"AI-Powered Security with Outstanding Threat Protection"

What do you dislike about Mimecast Advanced Email Security?

Steep Learning Curve / Complexity Aggressive Out-of-the-Box Settings / False Positives

2. Email Filtering Issues

Users face email filtering issues with Mimecast, struggling to locate emails and manage extensive policies effectively.

See 16 mentions

See Related User Reviews

tali k.

Enterprise (> 1000 emp.)

5.0/5

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

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

Verified User

Mid-Market (51-1000 emp.)

3.5/5

"Mimecast is a defensive email application"

What do you dislike about Mimecast Advanced Email Security?

The fact that email security has to be put into policies and if policies are not properly done you can have serious issues!

3. Email Issues

Users often face email policy configuration issues, leading to time-consuming adjustments and frustrations with usability.

See 16 mentions

See Related User Reviews

tali k.

Enterprise (> 1000 emp.)

5.0/5

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

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

Verified User

Mid-Market (51-1000 emp.)

3.5/5

"Mimecast is a defensive email application"

What do you dislike about Mimecast Advanced Email Security?

The fact that email security has to be put into policies and if policies are not properly done you can have serious issues!

4. False Positives

Users find the false positives in Mimecast frustrating, as they can delay important communications and require manual intervention.

See 13 mentions

See Related User Reviews

Akhil M.

Mid-Market (51-1000 emp.)

5.0/5

"Effortless Spam Blocking and Enhanced Email Security"

What do you dislike about Mimecast Advanced Email Security?

sometimes it block genuine user and take time

inayat S.

Enterprise (> 1000 emp.)

4.5/5

"AI-Powered Security with Outstanding Threat Protection"

What do you dislike about Mimecast Advanced Email Security?

Steep Learning Curve / Complexity Aggressive Out-of-the-Box Settings / False Positives

5. Ineffective Detection

Users report ineffective detection of legitimate emails, leading to disruptions and time-consuming manual interventions.

See 13 mentions

See Related User Reviews

Akhil M.

Mid-Market (51-1000 emp.)

5.0/5

"Effortless Spam Blocking and Enhanced Email Security"

What do you dislike about Mimecast Advanced Email Security?

sometimes it block genuine user and take time

inayat S.

Enterprise (> 1000 emp.)

4.5/5

"AI-Powered Security with Outstanding Threat Protection"

What do you dislike about Mimecast Advanced Email Security?

Steep Learning Curve / Complexity Aggressive Out-of-the-Box Settings / False Positives

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Verified User

Mid-Market (51-1000 emp.)

9/4/2026

"Comprehensive Protection, Effortless Setup"

5/5

What do you like best about Mimecast Advanced Email Security?

I like the protection and security that Mimecast Advanced Email Security offers. It effectively tackles unwanted access and phishing emails. I also appreciate the variety of tools it provides and found the initial setup to be very easy for me. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

I did not like the pricing of some plans as they are expensive Review collected by and hosted on G2.com.

Verified User

Small-Business (50 or fewer emp.)

8/8/2026

"Enhances Email Security with Ease of Use"

4/5

What do you like best about Mimecast Advanced Email Security?

I appreciate the safety and credibility that Mimecast Advanced Email Security provides. It helps me feel more secure, especially with my personal email, where I sometimes receive emails from unknown sources after publishing research papers. This tool helps me interact with credible resources and tools. Setting up Mimecast wasn't complicated at all. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

I think the user experience could be improved. Review collected by and hosted on G2.com.

Jissel Q.

Accountant

Mid-Market (51-1000 emp.)

4/29/2026

"Essential Email Security with Seamless Outlook Integration"

4.5/5

What do you like best about Mimecast Advanced Email Security?

I like the ease of use of Mimecast Advanced Email Security and how well it integrates with Outlook. Having a tool that makes security easy and can be used with our other software is essential. The initial setup was also easy. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

It may block emails I expect to receive, but I prefer it this way for security. Review collected by and hosted on G2.com.

Priti S.

Co-Founder

Consulting

Mid-Market (51-1000 emp.)

2/12/2024

"Email and collaboration security company"

4/5

What do you like best about Mimecast Advanced Email Security?

As a user of Mimecast Cloud Archive, I really appreciate the ease of use and accessibility it provides. I can quickly search through my old emails and find what I need, even on my mobile device. This has saved me a lot of time and frustration. Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

Mimecast Cloud Archive is a great tool for storing old emails, but it can be slow and clunky to search through them. I would also prefer to be able to access my archived emails directly from my inbox, rather than having to log in to the web interface. 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.

Jaylen J.

Design Intern

Mid-Market (51-1000 emp.)

4/21/2026

"Highly Effective Spam Email Targeting"

5/5

What do you like best about Mimecast Advanced Email Security?

the ability to target emails that are spam Review collected by and hosted on G2.com.

What do you dislike about Mimecast Advanced Email Security?

sometimes it doesnt get all the spam emails 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.