Is mimecast.com legit or a scam?
Mimecast.com is the long-standing official domain of a major global cybersecurity provider with over two decades of established history.
Analysis Summary
No threats detected
All checks passed. This site appears legitimate — but always stay alert for phishing even on trusted domains.
Website Preview
Automated page render — captured in a safe sandbox. What an ordinary visitor would see when loading the site.
MT Intelligence
Our analysis confirms this is the legitimate corporate domain for Mimecast, a well-known security vendor founded in 2003. The domain registration is over 8,500 days old and is managed by a reputable corporate registrar. Technical scans show a valid SSL certificate and a clean reputation across our entire antivirus network. While some automated signals flagged a tech-support pattern, our research confirms these are false positives caused by the site's legitimate support and login portals. The company is a registered legal entity in the UK with high trust ratings on professional review platforms.
Web Research Findings
Our live research agent queries scam-report databases, consumer-review sites, news coverage, and general web search for mimecast.com, then cross-checks business-registration records and look-alike domain patterns. Everything below is pulled from what it actually found.
- mimecast.com is the official website of Mimecast, a legitimate UK-based cybersecurity company founded in 2003 specializing in email security, archiving, continuity, and human risk management.
- MIMECAST SERVICES LIMITED is an active private limited company (no. 04901524) incorporated on 16 Sep 2003, registered at 1 Finsbury Avenue, London EC2M 2PF, UK.
- The company publishes its own threat intelligence reports on phishing campaigns that impersonate Mimecast or abuse its URL rewriting/linking features (e.g., protect.mimecast.com domains used in phishing).
- Trustpilot shows a low score of 2/5 from 25 reviews; Gartner rates the product 4.5/5 from 693 reviews and G2 4.3/5 from 470 reviews.
- Reddit discussions (r/sysadmin, r/mimecast) contain mixed feedback: praise for support in some threads, complaints about false positives, missed phishing, and phishing simulation platform in others.
- No direct evidence of mimecast.com itself being a scam, tech-support scam, or fraudulent site; the "Detected scam families: Tech-Support Scam" appears inconsistent with verified sources.
- Mimecast North America Inc. is not BBB accredited.
- SC Mediaopen
"Threat actors have exploited cybersecurity firm Mimecast's secure-link rewriting capability to deploy over 40,000 phishing emails mimicking SharePoint and DocuSign"
- Mimecast Threat Intelligenceopen
"A credential harvesting phishing campaign using the Mimecast brand. The threat actors use carefully designed secure messages to trick recipients"
- Gartneropen
"Overall experience with Mimecast Advanced Email Security · “Threat remediation stands out... Helpful onboarding” 4.5 (693 Ratings)"
- G2open
"Mimecast has been rated 4.3 stars by 470 verified reviews on G2"
- Reddit r/sysadminopen
"Mimecast's support is excellent. They will pick up the phone on a support call quickly and the first line support usually knows their stuff."
MIMECAST SERVICES LIMITED, company number 04901524, incorporated 16 September 2003, registered office: Floor 4, 1 Finsbury Avenue, London EC2M 2PF. Active private limited company (IT consultancy activities). US entity Mimecast North America, Inc. also registered.
Antivirus Engines
Security Scans
Checked against the major public blocklists used by browsers and security tools — no hits.
Contact Verification
We fetched the page and looked for real-world contact details. Legitimate businesses almost always publish an email on their own domain, a phone number, and a postal address. Scam shops usually don't.
- No contact email found anywhere on the page.
- No postal address visible on the page.
- Scam family match: Tech-Support Scam.
- Phone number listed (1 617 393 7000).
Domain & Encryption
Redirect Chain
- 1301http://mimecast.com/
- 2200https://www.mimecast.com/cross-domain
Server Reputation
Still, stay alert
No major threat indicators — but a clean scan does not guarantee every page is safe, and phishing emails routinely spoof real domains.
- Double-check the exact URL in your address bar
Confirm you are actually on mimecast.com and not a lookalike like m-imecast.com.com or an IDN homoglyph.
- Use a password manager
Password managers only auto-fill on the exact domain they were saved for — they refuse to fill lookalike domains, which is the single best phishing defence.
- OpenDiscuss this site on the forum
If you have first-hand experience with this site — good or bad — share it with the MalwareTips community.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
Referenced Domains
Outbound domains this page links to or loads resources from. Each links to its own security scan.
Safety FAQ
Common questions about this site, answered directly from the scan data above — so the answers always reflect the latest verdict on this page.
- Our automated security review found no threat indicators on mimecast.com. The site appears legitimate based on the signals we checked, but always stay alert for phishing emails that spoof real domains.
- mimecast.com passed our automated security checks with a trust score of 96/100. No antivirus engines or major blacklists flagged the site at the time of the last scan.
- Yes. mimecast.com presents a valid TLSv1.3 certificate issued by DigiCert Inc · DigiCert Global G2 TLS RSA SHA256 2020 CA1, expiring in 154 days. Note that SSL only encrypts the connection — it does not guarantee that the site itself is trustworthy.
- mimecast.com is 23.4 years old, registered on 2/20/2003 through MarkMonitor Inc.. Scam domains are often freshly registered — a site under 6 months old warrants extra caution.
- No. All 92 antivirus engines in our malware network report mimecast.com as clean.
- No. mimecast.com is not currently listed on the major browser blocklist feeds that modern browsers use.
- mimecast.com resolves to an IP operated by SQUIXA PTY LIMITED in AU (usage type: Content Delivery Network). Hosting location alone doesn't make a site good or bad, but unusual geography for a brand's claimed country is one of many signals we weigh.
- Yes. mimecast.com sits in the global top-100k on Cloudflare Radar, which means it has substantial real-world traffic. That does not automatically make it safe, but established brands almost always rank here and throwaway scam domains almost never do.
User reviews & comments(0)
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