Head-to-head · Email Anti-Spam Software
MX Guarddog vs N-able Mail Assure
MX Guarddog leads on 1 check, N-able Mail Assure on 0, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreMX Guarddog · 8.7/10
- Free planonly MX Guarddog
- Free trialboth
- Most featuresMX Guarddog · 2 of 3
MX Guarddog scores higher on our rubric for email anti-spam software: 8.7 against 8.6 out of 10; our editors rank them #3 and #4.
MX Guarddog offers free plan; N-able Mail Assure doesn't.
MX Guarddog is the better fit for budget-conscious domain owners. N-able Mail Assure is the better fit for MSPs managing multiple protected mail environments.
- MX Guarddog fits best
Budget-conscious domain owners
- N-able Mail Assure fits best
MSPs managing multiple protected mail environments
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Side by side
| Feature | MX Guarddog 8.7/10 Visit ↗ | N-able Mail Assure 8.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.7 | 8.6 |
| Ranking | #3 in Email Anti-Spam Software | #4 in Email Anti-Spam Software |
| Best for | Budget-conscious domain owners | MSPs managing multiple protected mail environments |
| Pricing model | Free plan + paid | Paid |
| Starting price | $0.25/unit/mo | Pricing on request · 30-day trial |
| Free plan | ✓ (best) | — |
| Free trial | 30 days | 30 days |
| Free trial length | 30 days · no card needed | 30 days |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Integrations | 3 integrations | 2 integrations |
| Features MX Guarddog 2/3 · N-able Mail Assure 0/3 | ||
| Phishing detection | ✓ (best) | Not checked yet |
| Malware scanning | ✓ (best) | Not checked yet |
| Attachment scanning | Not checked yet | Not checked yet |
| Specs | ||
| Quarantine access | User_and_admin | Not checked yet |
| Supported mail platforms | Standard SMTP email servers for owned domains; not consumer Gmail or Hotmail accounts | Not checked yet |
| Quarantine retention | 7 days | Not checked yet |
| Deployment type | Cloud_gateway | Not checked yet |
| Our review | ||
| Pros |
|
|
| Cons |
|
|
| Our verdict | MX Guarddog is a hosted email security service for organizations, individuals and domain owners operating their own email servers. It routes incoming mail through MX Guarddog data centers, scans messages for spam, phishing, malware and… Read the review → |
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 → |
Strengths and trade-offs
MX Guarddog — where it wins
- Spam, phishing, malware and virus scanning
- Quarantine access with message release and reports
- 168-hour outage spooling with TLS encryption
Where it doesn't
- Does not support consumer Gmail or Hotmail accounts
- Designed for owned domains using standard SMTP servers
- Free access requires visible website text links to earn tokens
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
- MX Guarddog8.7/10 · Free plan · 30-day trial
A low-cost cloud gateway for domain owners who run their own email servers.
Visit MX GuarddogFull verdict → - N-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 →
More comparisons
- Barracuda Message Archiver vs MX Guarddog
- Barracuda Message Archiver vs N-able Mail Assure
- Symantec IT Management Suite vs MX Guarddog
- Symantec IT Management Suite vs N-able Mail Assure
- MX Guarddog vs Forcepoint Email Security Cloud
- MX Guarddog vs Mimecast Email Security
- MX Guarddog vs Rspamd
- MX Guarddog vs Proxmox Mail Gateway
All email Anti-Spam software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update






