Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallCrashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteProofpoint did acquire Hornetsecurity, but the deal was not ultimately disclosed as a $1 billion transaction. Proofpoint announced the agreement on May 15, 2025, without publishing a price, and said on December 8, 2025, that the acquisition had closed for total consideration of $1.8 billion. The original “to acquire for $1 billion” wording is therefore outdated and inconsistent with the closing announcement.
The transaction gives Proofpoint a channel-focused Microsoft 365 security business serving small and midsize companies through managed service providers (MSPs), while Hornetsecurity gains Proofpoint’s global security resources and enterprise reach.
What happened and when
| Date | Event | What it means |
|---|---|---|
| May 15, 2025 | Proofpoint announced a definitive agreement to acquire Hornetsecurity. | Terms were confidential; closing was expected in the second half of 2025. |
| December 8, 2025 | Proofpoint announced that the acquisition had closed. | The company disclosed total consideration of $1.8 billion. |
| May 13, 2026 | Proofpoint announced a dedicated MSP Platform and the North American launch of Proofpoint 365 Total Protection. | The acquired business was being integrated as a distinct MSP- and SMB-focused operation. |
| June 2, 2026 | The MSP Platform announced an AI Governance Playbook for MSPs serving SMBs. | The roadmap extends beyond traditional email filtering. |
Sources: Proofpoint’s agreement announcement, closing announcement, MSP Platform launch and the MSP Platform press center.
Why the $1 billion figure is misleading
Proofpoint’s May 2025 announcement said the purchase price was confidential. Its December 2025 closing release said total consideration was $1.8 billion. None of those official announcements identifies a $1 billion cash component, enterprise-value measure, earn-out, or other structure that would reconcile the earlier figure.
#1 Best Overall
Accordingly, $1 billion should not be presented as the purchase price. The financing mix, assumed liabilities, contingent payments, closing adjustments and financial advisers were not detailed in the cited company releases. Those points require transaction filings or other primary disclosures before they can be stated as fact.
What Proofpoint acquired
Hornetsecurity was a Germany-based provider built around Microsoft 365 protection and an MSP distribution model. Proofpoint said Hornetsecurity served more than 125,000 customers through more than 12,000 MSPs and channel partners. Its reported annual recurring revenue (ARR) was more than $160 million when the deal was announced and nearly $200 million at closing; those are company-reported figures from different transaction stages, not necessarily directly comparable audited results.
The 365 Total Protection platform
Hornetsecurity’s platform combined several functions that are often purchased separately:
- Microsoft 365 email protection against phishing, malware and ransomware
- Microsoft 365 backup and recovery
- Compliance capabilities
- Security-awareness training
- Access and permission controls
- Domain-fraud protection and authentication tools
- Multi-tenant administration for MSPs
The acquisition therefore broadened Proofpoint’s position beyond enterprise email security. Public announcements do not establish every deployment method, retention period, supported integration, service-level agreement or data-residency option. Buyers should verify those details in current regional documentation.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Why Proofpoint wanted Hornetsecurity
A route into MSPs and SMBs
Proofpoint has traditionally been associated with enterprise email security, data protection and compliance. Smaller businesses commonly obtain cybersecurity through an MSP, which purchases, configures and supports services for multiple tenants. Hornetsecurity supplied that channel-native operating model rather than requiring Proofpoint to build it from scratch.
A broader Microsoft 365 security suite
Microsoft 365 customers increasingly need protection for mail, identities, files, collaboration data and recovery—not only a gateway that blocks suspicious messages. Hornetsecurity added backup, awareness, compliance and access-related capabilities around its email offering, giving Proofpoint a broader recurring-revenue platform.
European scale and partner reach
Hornetsecurity brought a substantial European customer and partner base, while Proofpoint contributed global threat intelligence, research and enterprise relationships. The stated strategy is both geographic and channel-led: expand through MSPs while offering a wider set of security and data-protection services.
Cross-selling and consolidation
The combination can let MSPs buy more services from one supplier and let Proofpoint cross-sell its capabilities into Hornetsecurity’s installed base. That may reduce the number of point products an MSP operates, although a bundle is not automatically more integrated or less expensive than separate tools.
Recommended Free Tools
Rank #3
What changed after closing
Proofpoint said Hornetsecurity would continue as a dedicated business focused on MSPs and SMBs. Founder and CEO Daniel Hofmann was retained as executive vice president and general manager, with the existing leadership team continuing.
In 2026, Proofpoint began referring to the operation as the Proofpoint MSP Platform. Its North American offering is called Proofpoint 365 Total Protection. Proofpoint’s MSP materials also state that Proofpoint Essentials is now Proofpoint 365 Total Protection, but customers should distinguish legacy Essentials contracts, the original Hornetsecurity product, and post-acquisition regional packages. A brand change alone does not prove that consoles, detection engines or entitlements have been technically merged.
What customers and MSPs should check
Proofpoint’s closing announcement promised continuity in service and support, plus access to Proofpoint’s resources. It did not promise that every product name, price, contract term or feature entitlement would remain identical.
- Contract status: Confirm whether the existing agreement remains in force or requires novation.
- Product mapping: Obtain a written cross-reference for legacy Hornetsecurity and Proofpoint Essentials plans.
- Pricing: Check renewal rates, minimum seats, backup-storage charges, retention fees and any price-protection language.
- Migration: Ask whether tenants, policies, archives and backup data move to a new console or remain where they are.
- Data location: Verify hosting regions, transfer mechanisms and compliance commitments for each geography.
- Support: Confirm contacts, escalation paths and support coverage after rebranding.
- Partner economics: Review margins, rebates, distributor access, billing tools and marketplace availability.
- Microsoft licensing: Determine which Microsoft subscriptions are required and which controls duplicate existing Defender rights.
How the combined offering fits the market
Microsoft Defender for Office 365
Microsoft’s native stack can be attractive to organizations already standardized on Microsoft 365 and holding qualifying licenses. Microsoft describes a mix of per-user and package-based pricing, and some Defender capabilities require combinations such as Microsoft 365 E3 or Office 365 E3 with Enterprise Mobility + Security E3. Details are listed on Microsoft’s security pricing page.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsProofpoint 365 Total Protection may appeal when an MSP wants one multi-tenant operating model spanning email, backup, awareness and compliance. A Microsoft-native customer should compare the incremental third-party cost with capabilities already included in its licenses.
Barracuda
Barracuda also offers Microsoft 365 email protection and MSP-oriented services. Its MSP page describes the channel model, while its public materials have advertised email security from $5 per user per month. That figure is a pricing signal, not a universal quote; plan, term, customer size and partner discounts can change the amount.
Check Point Harmony Email & Collaboration
Check Point’s offering covers Microsoft 365 and Gmail and emphasizes email and collaboration protection. Its pricing page is a useful comparison point for organizations supporting more than one productivity ecosystem. Feature scope, backup, training, compliance and MSP workflow should be compared individually rather than by marketing labels such as “AI.”
Proofpoint partner pricing is generally gated through its MSP channel. The official MSP page is more reliable for a current quote than older Proofpoint Essentials price lists, including this U.S. document, which should be treated as historical context rather than 2026 pricing.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Best Value
What the deal means for the industry
The acquisition increases consolidation in email and Microsoft 365 security and gives Proofpoint a stronger competitor position against Microsoft, Barracuda, Check Point, Mimecast and other specialists. MSPs may gain a broader platform and fewer vendor relationships, but they could also face less choice, more bundled licensing and greater dependence on one supplier.
The commercial test is whether the combined platform genuinely lowers operational work and total cost. MSPs should measure tenant administration, automated provisioning, PSA and billing integration, support quality, migration effort and partner margin—not simply count features.
Bottom line
Proofpoint completed the Hornetsecurity acquisition on December 8, 2025, for disclosed total consideration of $1.8 billion. The transaction is best understood as a move into MSP-led SMB security, backed by a Microsoft 365 suite that includes email protection, backup, compliance and awareness services. Its long-term value will depend on preserving Hornetsecurity’s channel economics, delivering reliable product integration and giving customers clear answers on contracts, pricing, data residency and migration.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
