N-able Mail Assure vs Proxmox Mail Gateway

NAN-able Mail Assure8.6Visit Proxmox Mail Gateway7.9Visit

Higher score NA N-able Mail Assure #4 in Email Anti-Spam Software 8.6/10 Pricing on request · 30-day trial Free trial✓ 0 of 3 features Visit N-able

vs

Proxmox Mail Gateway #8 in Email Anti-Spam Software 7.9/10 Open source ✓ 0 of 3 features Visit Proxmox

• N-able Mail Assure fits best

  MSPs managing multiple protected mail environments

• Proxmox Mail Gateway fits best

  Self-hosted teams wanting a full mail gateway

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Side by side

Feature	NAN-able Mail Assure 8.6/10 Visit ↗	Proxmox Mail Gateway 7.9/10 Visit ↗
At a glance
Editor score	8.6	7.9
Ranking	#4 in Email Anti-Spam Software	#8 in Email Anti-Spam Software
Best for	MSPs managing multiple protected mail environments	Self-hosted teams wanting a full mail gateway
Pricing model	Paid	Paid
Starting price	Pricing on request · 30-day trial	€190/yr
Free plan	—	—
Free trial	30 days	—
Deployment	Cloud	Cloud, Desktop, Self-hosted
Platforms	Web	Web, Linux
Integrations	2 integrations	5 integrations
Features N-able Mail Assure 0/3 · Proxmox Mail Gateway 0/3
Phishing detection	Not checked yet	Not checked yet
Malware scanning	Not checked yet	Not checked yet
Attachment scanning	Not checked yet	Not checked yet
Specs
Quarantine access	Not checked yet	Not checked yet
Supported mail platforms	Not checked yet	Not checked yet
Quarantine retention	Not checked yet	Not checked yet
Deployment type	Not checked yet	Not checked yet
Our review
Pros	Filters inbound and outbound email with machine learning and threat intelligence Combines continuity, encrypted archiving, quarantine, and authentication controls Supports multitenant management, Microsoft 365, Google Workspace, and an API	Scans inbound and outbound mail with SpamAssassin and ClamAV Extensive SMTP filtering, policy rules, quarantine, and mail actions Includes tracking, unified logs, clustering, web, CLI, and API administration
Cons	Pricing requires contacting sales rather than selecting a published numeric plan The 30-day offer is a trial, not a perpetual free plan Cloud deployment may not suit organizations requiring an on-premises model	Requires gateway deployment between the firewall and internal mail server Annual subscriptions are priced per host, starting at €190 Support depth varies substantially by subscription tier
Our verdict	N-able Mail Assure is a cloud-based email security service designed primarily for managed service providers and their customers. It filters inbound and outbound email against spam, malware, phishing, ransomware, spoofing, and other… Read the review →	Proxmox Mail Gateway is an open-source mail proxy for organizations that need to inspect and control inbound and outbound email. It sits between a firewall and an internal mail server, analyzing traffic for spam, viruses, Trojans,… Read the review →

Strengths and trade-offs

• N-able Mail Assure — where it wins

  • Filters inbound and outbound email with machine learning and threat intelligence
  • Combines continuity, encrypted archiving, quarantine, and authentication controls
  • Supports multitenant management, Microsoft 365, Google Workspace, and an API

  Where it doesn't

  • Pricing requires contacting sales rather than selecting a published numeric plan
  • The 30-day offer is a trial, not a perpetual free plan
  • Cloud deployment may not suit organizations requiring an on-premises model

• Proxmox Mail Gateway — where it wins

  • Scans inbound and outbound mail with SpamAssassin and ClamAV
  • Extensive SMTP filtering, policy rules, quarantine, and mail actions
  • Includes tracking, unified logs, clustering, web, CLI, and API administration

  Where it doesn't

  • Requires gateway deployment between the firewall and internal mail server
  • Annual subscriptions are priced per host, starting at €190
  • Support depth varies substantially by subscription tier

• NAN-able Mail Assure8.6/10 · Pricing on request · 30-day trial

  A broad, MSP-focused email security service with filtering, continuity, archiving, and multitenant control.

  Visit N-ableFull verdict →
• Proxmox Mail Gateway7.9/10 · Open source

  A full mail gateway for teams that want self-hosted scanning, rules, quarantine, and logs.

  Visit ProxmoxFull verdict →