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Mimecast Web Security Reviews

Vendor: Mimecast
3.5 out of 5

What is Mimecast Web Security?

Mimecast Web Security mindshare

As of January 2026, the mindshare of Mimecast Web Security in the Secure Web Gateways (SWG) category stands at 0.3%, up from 0.2% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Secure Web Gateways (SWG) Market Share Distribution
ProductMarket Share (%)
Mimecast Web Security0.3%
Cisco Umbrella15.1%
Zscaler Internet Access13.3%
Other71.3%
Secure Web Gateways (SWG)
 
 
Key learnings from peers
Last updated Jan 21, 2026

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Mimecast Web Security Reviews Summary
Author infoRatingReview Summary
IT Manager at a logistics company with 201-500 employees3.5I've used Mimecast Web Security for over five years, finding it effective in email and URL protection, though improvements are needed. Stability and reporting are decent, but I rely on my MSP for management, support, and monitoring.
Lead Engineer - Work Modernization at Searce Inc3.5Mimecast enhances our email security and data loss prevention by complementing Google Workspace. It offers strong features but suffers from poor customer support and recurring UK service disruptions. Despite these issues, it delivers a favorable ROI with superior functionalities compared to competitors.