Sp00fer blog post -
A tool to verify electronic mail addresses using SMTP
A script to connect to a SMTP server and send email using that.
A secure, interactive PowerShell tool for systems administrators to validate Office365 SMTP configurations, test credentials (including App Passwords), and troubleshoot email delivery issues without hardcoding sensitive data.
A standalone, single-file PHP server to test standard SMTP and AWS SES (IAM Keys) connections
Various tools for setting up and testing Exim4 mail server
SMTP test tool: verify Nodemailer credentials, send test emails, get human-readable error diagnostics + SPF/DKIM/DMARC checks. Next.js 16, TypeScript, beUI, Tailwind v4. Credentials never stored.
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