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Free SMTP Tester - Get Your Spam Score
Test SMTP, SPF, DKIM, DMARC & spam score. No signup.
Most SMTP testers only check if your server connects. Then you need separate tools for SPF, DKIM, DMARC, blacklist checks, and spam scoring. This does all of it in one test. - SMTP connection on any port (25, 587, 465, 2525) - SPF, DKIM, DMARC record verification - MX and PTR record checks - IP blacklist scan (major RBLs) - Spam score analysis - Your password is used once and never stored Free. No account. No download. nesdzo.com/smtp-tester
Hi PH 👋
I got tired of using 4 different tools every time I needed to debug email deliverability. One for SMTP connection, another for SPF, another for blacklist check, another for spam score.
So I built one that does everything in a single test. Enter your SMTP details, hit run, and get the full picture: connection status, DNS records, blacklist status, and spam score — all in one report.
Your password is only used to authenticate the test connection. It is never stored, logged, or kept anywhere. The test sends one email to your recipient address and that's it.
Built as a WordPress plugin (yes, really) with a PHP backend handling the actual SMTP tests and DNS lookups. Frontend is vanilla JS.
Free, no limits, no signup. If it saves you from digging through mxtoolbox tabs, it did its job.
Try it: nesdzo.com/smtp-tester
Question: would you trust a browser-based tool with your SMTP credentials for a one-off test, or is that still a hard no regardless of the "we don't store it" promise?
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About Free SMTP Tester - Get Your Spam Score on Product Hunt
“Test SMTP, SPF, DKIM, DMARC & spam score. No signup.”
Free SMTP Tester - Get Your Spam Score was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #102 on the daily leaderboard. Most SMTP testers only check if your server connects. Then you need separate tools for SPF, DKIM, DMARC, blacklist checks, and spam scoring. This does all of it in one test. - SMTP connection on any port (25, 587, 465, 2525) - SPF, DKIM, DMARC record verification - MX and PTR record checks - IP blacklist scan (major RBLs) - Spam score analysis - Your password is used once and never stored Free. No account. No download. nesdzo.com/smtp-tester
Free SMTP Tester - Get Your Spam Score was featured in Email (36.7k followers), Productivity (652k followers) and Developer Tools (512.7k followers) on Product Hunt. Together, these topics include over 209.7k products, making this a competitive space to launch in.
Who hunted Free SMTP Tester - Get Your Spam Score?
Free SMTP Tester - Get Your Spam Score was hunted by Oğuz Yeşil. 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.
Want to see how Free SMTP Tester - Get Your Spam Score stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Oğuz Yeşil