Security●Mid
MailSec – Free email security audit API (one curl, eight checks)
Convenient wrapper, but mxtoolbox and dig already handle these checks individually.
Solve My Problem
lgogolin
102mo ago
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GitHub Repository
Open-source SMTP deliverability diagnostic tool — SPF/DKIM/DMARC checks, SMTP verification & RBL blacklist scanning
6 starsGo
SMTP-probe – an open-source email deliverability diagnostic tool
by starryrbs·Jul 24, 2026·1 point·0 comments
AI Analysis
●●SolidSolve My Problem
Solid CLI for email deliverability that handles RBL scans better than most web tools.
Strengths
- •Single binary handles DNS, SMTP, and RBL checks without external dependencies.
- •Supports bind-IP failover for testing from different geolocations.
- •Outputs machine-readable JSON for CI/CD pipeline integration.
Weaknesses
- •Requires port 25 access which is blocked on many cloud providers.
- •Disposable email detection relies on external upstream data sources.
Category
Target Audience
DevOps engineers and email admins
Similar To
Mail-Tester · MXToolbox · GlockApps
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