SMTP Tester
A fast, modern SMTP probe & test tool for Windows.
What is SMTP Tester?
SMTP Tester is a Windows WPF tool for probing and validating SMTP connectivity, TLS modes, authentication, and message sending. It is intended for troubleshooting and configuration testing.
STARTTLS
SSL/TLS
Auth testing
Transcript logging
Profiles
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Ask questions, report issues, and share configs with the community.
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Create accountScreenshot
A quick look at the SMTP Tester UI.