Proofpoint vs Microsoft Defender for Office 365
Email Security pricing comparison · 2026
Proofpoint is quote-based, while Microsoft Defender for Office 365 costs $2–$5/user/mo.
Proofpoint
Proofpoint is a leading email security platform protecting businesses from phishing, malwa
verified today
$250
$87K
Microsoft Defender for Office 365
Microsoft Defender for Office 365 (formerly Office 365 Advanced Threat Protection) is an i
verified 5d ago
$250
$87K
Recorded annual contract medians
Microsoft
median is
$87K
less than
Proofpoint
· different customer contracts; not a quote
Cheapest
$250
Spread
100%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Pricing model unknown
Pricing model unknown
no public list price found
Microsoft Defender for Office 365 (Plan 2)
$1.5K/yr
year 1 license · $5/seat
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
Median annual
$87K/yr
Vendr · n=85
avg 10% negotiated
↓ Lowest median
Median annual
$250/yr
Vendr · n=42
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
9 sourced facts
5 hidden-cost · 3 contract · Vendr median
Last verified
today
Confidence
High confidence
Sources
3 sourced facts
1 contract · Vendr median · 1 review platform
Last verified
5d ago
Confidence
High confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 04
Contract terms
The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.
Proofpoint
Microsoft
Auto-renewal
Yes
—
Cancellation
90 days before renewal
seven days after the start or renewal
Commitment
1 year
—
Price escalation
5% annual uplift standard; only negotiable with multi-year commitment
—
Can downgrade
—
—
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
Proofpoint and Microsoft Defender for Office 365 both operate in the email security category. This page compares their list pricing.
Plan-by-Plan Pricing
| Plan | Proofpoint | Microsoft Defender for Office 365 |
|---|---|---|
| Collaboration Security Tier 2 | Custom | $2 /user/month |
| Collaboration Security Tier 3 | Custom | $5 /user/month |
| Collaboration Security Prime | Custom | — |
| Core Email Protection | Custom | — |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
Proofpoint
3 scenarios—
Small Business (50 users)
—
Mid-Size Company (250 users)
—
Enterprise (1,000 users)
Microsoft Defender for Office 365
3 scenarios—
Small Business on E3 (50 users)
—
Mid-Size Company on E3 with Plan 2 (250 users)
—
Enterprise on E5 (1,000 users)
Market Intelligence
Proofpoint
- Median annual cost
- $87,000
- Average negotiated discount
- 10%
- Based on
- 85 deals
Microsoft Defender for Office 365
- Median annual cost
- $250
- Based on
- 42 deals
Contract Terms
| Term | Proofpoint | Microsoft Defender for Office 365 |
|---|---|---|
| Auto-renewal | Yes | — |
| Cancellation | 90 days before renewal | seven days after the start or renewal |
| Minimum commitment | 1 year | — |
| Price escalation | 5% annual uplift standard; only negotiable with multi-year commitment | — |