Mimecast and Proofpoint are the two dominant enterprise email security platforms globally, and both are actively sold in India. For Indian organisations evaluating email security for Microsoft 365 or Exchange, the choice between these two is a common and consequential decision. This comparison covers capabilities, architecture, India-specific considerations, and which platform suits different buyer profiles.
Company and Product Overview
Mimecast: UK-founded email security and resilience company. Known for its integrated approach combining threat protection, data loss prevention, archiving, and email continuity in a single platform. Acquired by Permira in 2021. Strong in mid-market and enterprise.
Proofpoint: US-based email security company, publicly traded until acquired by Thoma Bravo in 2021. Historically the market leader in enterprise email security. Strong in large enterprise and regulated industries. Known for its people-centric security model and advanced threat intelligence.
Both are cloud-native platforms that deploy as MX gateway services — email is routed through their infrastructure before delivery to Microsoft 365 or on-premise Exchange.
Core Capabilities Comparison
Anti-Spam and Bulk Email Filtering
Mimecast: Multi-layered spam detection combining reputation filtering, content analysis, and machine learning. Mimecast's spam catch rate is consistently high in third-party testing. Quarantine digest sent to users; self-release capability reduces helpdesk overhead.
Proofpoint: Similar layered approach with Proofpoint's own anti-spam engine. Proofpoint's bulk email filtering is granular — it distinguishes between graymail (wanted bulk email, newsletters) and spam, providing users more control over their inbox categories.
Verdict: Tie for standard spam filtering. Proofpoint's graymail handling is more sophisticated for users who want granular control.
Advanced Threat Protection — Phishing and Malware
Mimecast: Targeted Threat Protection includes:
- URL protection — rewrites all links, scans at click-time in real time
- Attachment protection — sandbox analysis of attachments (Mimecast Threat Intelligence)
- Impersonation protection — detects lookalike domains and display name attacks
- DMARC analyser — integrated DMARC reporting and enforcement management
Proofpoint: Advanced Threat Protection includes:
- URL Defence — click-time URL rewriting and scanning (similar to Mimecast)
- TAP Attachment Defence — sandbox analysis using multiple detection engines
- Impostor Email Defence — BEC and impersonation detection
- Very Attached Files (VAF) — scanning of password-protected attachments (a Proofpoint differentiator)
- Nexus Threat Graph — AI-driven threat correlation across email, cloud, and network
Verdict: Proofpoint's threat intelligence depth is broadly considered superior, particularly for large enterprises. Mimecast is fully capable for mid-market requirements. Proofpoint's Very Attached Files scanning for password-protected ZIPs is a meaningful differentiator for financial and legal sectors.
Business Email Compromise (BEC) and Impersonation
BEC — impersonating executives (CEO fraud) to trick finance teams into wire transfers — is a major threat for Indian businesses, particularly in manufacturing, finance, and trading companies.
Mimecast: Impersonation protection scans for display name spoofing, lookalike domains, and unusual From/Reply-To header combinations. Integrates with a VIP list — protect executives by name.
Proofpoint: Impostor Email Defence with Proofpoint's people-centric model identifies the Very Attacked People (VAP) in your organisation using threat intelligence. Proofpoint's BEC detection is consistently rated highly in third-party evaluations, particularly for sophisticated impersonation attacks that bypass display name filters.
Verdict: Proofpoint for large enterprises and finance-sector buyers where BEC risk is highest. Mimecast's BEC protection is adequate for most mid-market Indian organisations.
Data Loss Prevention (DLP)
Mimecast: Built-in DLP with content inspection policies. Mimecast DLP scans outbound email for sensitive data patterns (PAN card numbers, AADHAAR patterns, bank account formats, financial data) and applies configurable actions (block, quarantine, encrypt, notify).
Proofpoint: Proofpoint's DLP is a full enterprise DLP platform — Proofpoint Information Protection covers email, cloud applications, endpoint, and insider threat detection in a unified policy engine. More comprehensive than Mimecast but also more complex to configure.
Verdict: Proofpoint for organisations requiring enterprise DLP across multiple channels. Mimecast for email-focused DLP in mid-market environments.
Email Archiving
Mimecast: Archiving is a core Mimecast product — the Mimecast archive stores email indefinitely (or per-policy), provides instant search across all archived mail, and supports legal hold and eDiscovery workflows. This is one of Mimecast's strongest capabilities and a primary reason many organisations choose it.
Proofpoint: Proofpoint Archive (formerly Nexigate) offers similar capabilities — cloud-based archiving with legal hold, eDiscovery, and compliance search.
Verdict: Mimecast's archiving is mature and deeply integrated with the rest of the platform. For organisations that need archiving as a core requirement alongside email security, Mimecast's integrated bundle is compelling.
Email Continuity
Mimecast: Email Continuity is a native Mimecast feature — if your Microsoft 365 or Exchange environment goes down, Mimecast's continuity service allows users to send and receive email through Mimecast's emergency inbox. This is a meaningful operational resilience capability.
Proofpoint: Does not offer email continuity as a native feature. Requires third-party continuity solutions.
Verdict: Mimecast. Email continuity is a differentiator for organisations where email uptime is business-critical (financial services, logistics, healthcare).
Deployment Architecture
Both platforms deploy as cloud MX gateways:
- Change MX records to point to Mimecast or Proofpoint infrastructure
- Configure mail destination (Microsoft 365, Exchange) for clean mail delivery
- Lock down your mail platform to only accept mail from the gateway IPs
- Configure inbound and outbound policies
Both platforms integrate with Microsoft 365 via connectors and support SPF, DKIM, and DMARC alignment for outbound mail.
Microsoft 365 Integration
Both Mimecast and Proofpoint deploy alongside Microsoft 365 — they add a security layer that Microsoft's native Defender for Office 365 does not fully cover.
Mimecast + Microsoft 365:
- Mimecast has a Microsoft 365 app in the Azure Marketplace
- Integrated Microsoft Teams notification support
- Sync with Azure AD for directory-based policies
- Microsoft 365 journal connector for archiving all M365 email
Proofpoint + Microsoft 365:
- Similar Azure AD integration
- Proofpoint's integration with Microsoft Sentinel for SIEM correlation
- Proofpoint supports Microsoft's MAPL (Mail Assurance) API for enhanced integration
Pricing in India
Neither Mimecast nor Proofpoint publish standard India pricing. Both are sold through authorised resellers on annual per-mailbox subscriptions.
Mimecast: Pricing tiers by bundle. Email Security (threat protection only) is the entry tier; adding archiving and continuity increases per-mailbox cost significantly. Indicative range for Indian mid-market: ₹800–₹2,500/mailbox/year depending on bundle and scale.
Proofpoint: Tiered by feature depth — Essentials (mid-market product), Business Protection, and Enterprise. Enterprise pricing is substantially higher than Mimecast at equivalent seat counts. Proofpoint Essentials is a separate mid-market focused product with simplified licensing.
General principle: Mimecast is typically more cost-competitive at mid-market scale (50–500 mailboxes). Proofpoint is the preferred enterprise choice (500+ mailboxes) where its threat intelligence depth justifies the premium.
Which to Choose for India
Choose Mimecast if:
- You need email archiving + security in a single platform — Mimecast's bundled archive is a core differentiator
- You need email continuity — Mimecast's emergency inbox is native; Proofpoint requires add-ons
- You are a mid-market Indian organisation (50–500 mailboxes) — Mimecast's pricing and simplicity is well-suited
- Your IT team is lean — Mimecast's admin interface is considered more accessible
Choose Proofpoint if:
- You are a large enterprise (500+ mailboxes) where Proofpoint's threat intelligence depth is justified
- BEC and targeted attack protection is the primary purchase driver — Proofpoint's VAP model and TAP intelligence are industry-leading
- You need enterprise DLP across multiple channels (email + cloud + endpoint) — Proofpoint Information Protection is broader
- You are in BFSI, pharma, or government where Proofpoint's compliance reporting is often required
Cloudfy Systems is an authorised Mimecast email security partner in India. We supply and deploy Mimecast Email Security with INR billing, GST invoice, MX record configuration, and policy setup. Contact us for a Mimecast vs Proofpoint comparison for your specific environment and a same-day INR quote.