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Mimecast: The $553M Email Security Giant
How 78% direct traffic reveals a B2B monopoly in the making
In a world where email remains the #1 attack vector, one company quietly commands 4.8M monthly visits with a 78% direct traffic monopoly. Mimecast isn't just selling security—they're becoming the default infrastructure for enterprise communication.
"78% direct traffic isn't marketing—it's infrastructure lock-in. When users type 'mimecast' instead of searching, you've won the category."
The Traffic Moat
Mimecast's 78% direct traffic is a rare feat in B2B SaaS. Compare that to the 17% organic search—proving they're not fighting for keywords, they ARE the keyword. The top search term 'mimecast' alone drives 35K monthly queries, followed by 'mimecast login' at 12K. This isn't acquisition; it's habit formation.
The Enterprise Gravity
With 2,630 employees and $553M in revenue, Mimecast operates at $210K ARR per employee—a solid efficiency ratio for infrastructure security. But the real story is in the undefined markets dominating their traffic (70.1% + 9.1% + 5.2% = 84.4% combined). This suggests either intentional anonymization or a US/EU duopoly where they're so dominant they don't need geographic targeting.
The trust score tells a different story. A 1.8/5 on Trustpilot from 24 reviews suggests enterprise customers aren't buying for love—they're buying because compliance demands it. In security, being indispensable beats being beloved.
- Monopoly-level direct traffic (78%) indicates infrastructure lock-in, not brand affection
- Top 5 keywords are all navigational—users aren't discovering, they're returning
- Revenue per employee ($210K) sits in the sweet spot for mature security infrastructure
- Trustpilot 1.8/5 reveals the B2B reality: necessity trumps satisfaction
The Silent Infrastructure Play
Mimecast proves that in B2B security, being boringly indispensable beats being excitingly innovative. 78% direct traffic isn't a metric—it's a moat.
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Reviews (20)
Had to message but got a call back
I simply cannot get through to them. I have left messages. I am in hurry to submit self-assessment by deadline. Update: Sam from mimecast called me in response to messages and sorted the whole issue of how to access email as an end-user. The whole mess up was caused by Al Rayan Bank (their client) and not mimecast. So changed negative to a positive review. Thanks again Sam
Mimecast sucks
Mimecast sucks; it's a major time waster. I can only assume its developers aren't actually forced to use it or these rather simple things could be fixed and it could be great. 1) stop making me fill out my email address with every submittal. Mimecast knows my domain, why not me? 2) Responses from submitals are toooo sloooow. 3) Why can't you frickin remember the same site and allow it to be trusted so we don't have to go through this process again? 4) For each blocked email on hold, why do you make me view each one? I often know they are spam. Let me select multiple and delete without viewing them. Again, major time waster. 5) I reject an email and you have to tell me again in mimecast that I rejected an email so I have to clear that as well? ...there are others, but this gives you an idea. Can't believe they got this far.
Twice this month service has been…
Twice this month service has been interrupted and was down for our entire group and country. What is is going on ? This down time cost business a lot of money. Once is more than enough. But twice is unacceptable.
it's not absolutely and completely utterly useless
I agree with other reviewers that Mimecast is a block to productivity... it catches emails that it doesn't need to and converts files that are perfectly fine in XLSX format into CSV. It does however catch a lot of spam, so it is not absolutely and completely utterly useless, but it is definitely a daily pain, and I will be glad to get shot of it from my organisation. I have not tried contacting them for support or anything so cannot comment on customer service.
Customer satisfaction not a concern
Like many companies anymore customer satisfaction is just not important. Support is preferred via email, and it can take hours for a response. They tell you to call in but that is supposed to be for system down issues only. Instead of just getting on a phone call and resolving the issue really quickly, they would rather you open a ticket online and spend hours, days or weeks to resolve an issue via a ridiculous number of emails back and forth than just jumping on a 15 min call to resolve the issue.
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About mimecast.com
Company Overview
Technology Stack
mimecast.com uses 12 technologies across their website including Font Awesome, HSTS, unpkg, and more.
Fonts
Font Awesome
Security
HSTS
CDN
unpkg
Privacy & Consent
OneTrust
Analytics & Marketing
Google Tag Manager
Performance
Lazy Loading
Traffic & Audience
mimecast.com receives approximately 4.8M monthly visitors and ranks #11,437 globally. The website has a bounce rate of 42% with visitors viewing an average of 4.1 pages per visit. Users spend an average of 8:05 on the site.
The majority of mimecast.com's traffic comes from undefined, undefined, .
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This page provides publicly available information about mimecast.com. Data is collected from various public sources and may not always be up to date. For the most accurate information, please visit mimecast.com directly at https://mimecast.com.