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GitHub - georgjf/SMTPtool: A slim .NET based UI tool to communicate with SMTP servers and to quickly compose, mail and remail messages
Setting up a fake SMTP server for testing | Mailosaur
10 Best SMTP Testing Tools for Email Security And Safety
Setting up a fake SMTP server for testing | Mailosaur
Open SMTP Relay Server: What, Why and How? - Mail250 - An AI driven Bulk Email Marketing Solution
How to Test SMTP Server from the Command Line via Telnet or Free Tools | Mailtrap Blog
How to Test SMTP Relay | Mailtrap Blog
