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smtp-probe
Go CLI for email deliverability diagnostics
Open-source Go CLI tool for diagnosing email deliverability before sending. Checks SPF/DKIM/DMARC/PTR/MX DNS records with health scoring, verifies addresses via SMTP RCPT TO with bind-IP support, detects role-based emails (admin@, support@), corrects domain typos (gmial.com -> gmail.com), scans 29 RBL blacklists, and flags disposable email domains (~74k). Includes REST API. Free demo: https://probe.uspeedo.online/
Hi everyone! I built smtp-probe because I was frustrated by the lack of good open-source tools for diagnosing email deliverability at the command line.
Most existing solutions are either proprietary SaaS or don't cover all the angles (DNS, SMTP, blacklists) in a single tool. smtp-probe aims to be the swiss-army knife for email deliverability - from a Go CLI for ops teams to a REST API for automation.
With the latest v0.1.3 update, we added role-based email detection (identifies admin@, support@, sales@ addresses) and domain typo correction (catches gmial.com -> gmail.com mistakes).
Try it online at https://probe.uspeedo.online/ or install with: bash <(curl -fsSL https://raw.githubusercontent.co...)
Would love to hear your feedback!
About smtp-probe on Product Hunt
“Go CLI for email deliverability diagnostics”
smtp-probe was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #158 on the daily leaderboard. Open-source Go CLI tool for diagnosing email deliverability before sending. Checks SPF/DKIM/DMARC/PTR/MX DNS records with health scoring, verifies addresses via SMTP RCPT TO with bind-IP support, detects role-based emails (admin@, support@), corrects domain typos (gmial.com -> gmail.com), scans 29 RBL blacklists, and flags disposable email domains (~74k). Includes REST API. Free demo: https://probe.uspeedo.online/
On the analytics side, smtp-probe competes within Email, Open Source, Developer Tools and GitHub — topics that collectively have 664.3k followers on Product Hunt. The dashboard above tracks how smtp-probe performed against the three products that launched closest to it on the same day.
Who hunted smtp-probe?
smtp-probe was hunted by 魏baoshi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of smtp-probe including community comment highlights and product details, visit the product overview.
魏baoshi