Try Mimecast for 30 days, no strings attached

Mimecast's API-based email security detected 28% of delivered emails were malicious or unwanted.¹ Start a free assessment to see what's hiding in your inboxes: no MX changes, no mail flow disruption, no payment details required.

New customers who sign by September 30, 2026, get 6 months free.²

What to expect:

  • Connect to Microsoft 365 via API and start scanning the last 30 days of email for threats
  • Continue scanning live mail alongside existing defenses
  • Get a detailed log of email risks including threat volume and attack types

Fill out the form to get started. No payment details required

¹Based on 14M emails scanned by Mimecast API-based email security in 60 days.
²Talk to sales for eligibility details

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Mimecast's API-based email security in action

Learn how Mimecast's API-based email security combines effortless setup with AI-powered threat protection.

Start Proof of Value

Get up and running in minutes

  • Icon_BCircle_connect-via-api.svg

    Connect via API

    Grant API permissions to your Microsoft 365 environment. No MX record changes, no DNS updates, no mail flow modifications.
  • Icon_BCircle_detect-threats.svg

    Get results on day 1

    Mimecast scans 30 days of historical and live mail using the same multi-layered AI detection trusted by 42,000+ customers. 
  • Icon_BCircle_See-Exposure.svg

    See your exposure

    Review every detected threat in the Analysis & Response dashboard categorized by threat family (Malware, Phishing, Spam) with full attack details.
  • Icon_BCircle_decision.svg

    Choose your coverage

    Validate Mimecast's effectiveness with your own environment data, then choose when and how to enforce protection.

42,000+

customers protected globally

1.7 Billion

emails inspected daily

12B Signals

processed every second

Frequently Asked Questions

This is a full proof of value, not just a passive scan. You'll get real-time monitoring in Monitor Mode, 30-day historical threat analysis, and complete access to the Mimecast platform during the trial period, including Collaboration Security, DMARC Analyzer, Awareness Training, and Sync & Recover.

No. Mimecast deploys via Microsoft 365 API — there are no MX record changes, no DNS modifications, and no impact on email delivery or user experience.

No problem. You can start with API-based deployment for your proof of value and transition to MX-based gateway deployment at onboarding.

If you start and keep the trial in Threat Scan only mode, there are no steps necessary to remove the trial. Otherwise, it’s just a few simple steps.

Ready to get started?

Keep ahead of the ever-evolving threat landscape with Mimecast

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