SecLens.ONE vs SmarterTools SmarterMail: side-by-side comparison (2026)
SecLens.ONE is a free email security platforms solution by 42Sec PTE. LTD. SmarterTools SmarterMail is a commercial email security platforms solution by SmarterTools. Features, integrations, deployment and the company behind each one, side by side.
Free email-security check for any domain: SPF, DKIM, DMARC and DNSSEC.
Email server with antispam, antivirus, and security features for Linux/Windows
Side-by-side comparison
Feature
SecLens.ONE
SmarterTools SmarterMail
Pricing model
Free
Commercial
Category
Email Security Platforms
Email Security Platforms
Deployment and fit
Deployment type
Cloud
On-Premises
Company size fit
Startup, SMB, Mid-Market, Enterprise
Startup, SMB, Mid-Market, Enterprise
Company
Company
42Sec PTE. LTD.
SmarterTools
Use cases and capabilities
DMARC
Yes
Yes
SPF
Yes
Yes
DKIM
Yes
Yes
Open Source
Yes
No
DNS Security
Yes
No
Spam Prevention
No
Yes
Linux
No
Yes
Windows
No
Yes
Core features
6 features listed
10 features listed
Integrations
No integrations listed
6 integrations listed
Need help choosing?
See more solutions in this category, or build a security stack from your picks.
