Email
SMTP Server Tester
Test an SMTP server's connectivity and banners.
Runs in your browser. Free, nothing is uploaded.
About this tool
Free smtp server tester tool. Test an SMTP server's connectivity and banners. No signup, nothing uploaded.
Frequently asked questions
Do you send any email?
No. This tool only analyses or generates text and records.
Is my input stored?
No. Everything stays in your browser.
Will this fix my deliverability?
It shows the problem; fix it at your DNS or mail server as indicated.
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