Connecting to a Mail Server
Mail Server Configuration - Using a Third Party Mail Service | Netaphor SiteAudit(TM) Knowledgebase
SMTP Mail Sender - Portable SMTP mailer
MultiMail 2.0 - Freeware SMTP stress testing tool - CodeProject
Testing the installation | FortiMail 7.2.4
SMTP Test from PowerShell
How to Test SMTP Server from the Command Line via Telnet or Free Tools | Mailtrap Blog
How to test mail server SMTP connection by telnet at OS (unix) for SCOT config. | SAP Blogs
Fake SMTP server! Great for testing email / SMTP! – Superhero Ninja
SMTP Test from PowerShell
SMTP Test Tool Download - It has the ability to initiate and monitor a complete email (SMTP)
Setting up a fake SMTP server for testing | Mailosaur
How to Install and Configure SMTP Server on Windows Server 2016/2012 R2? | Windows OS Hub
Portable SMTP Tester - Download & Review
Just launched! World's best SMTP server testing tool.
SMTP Prober
GitHub - georgjf/SMTPtool: A slim .NET based UI tool to communicate with SMTP servers and to quickly compose, mail and remail messages
GitHub - georgjf/SMTPtool: A slim .NET based UI tool to communicate with SMTP servers and to quickly compose, mail and remail messages
Test Mail Server Tool User's Manual
How to Send from Outlook Using SMTP | Postmark Support Center
13 SMTP Tools to Diagnose and Test Email Security
Effective SMTP Server Diagnostics | Free SMTP Connection Test Tool
Test SMTP connection and send test email
13 SMTP Tools to Diagnose and Test Email Security
Step 1. Configure SMTP Server Settings - Veeam ONE Monitoring Guide
Testing SMTP Relay Server Connection Issues Without Using Telnet
