Little Snitch vs SMTP Diag Tool
A side-by-side look at Little Snitch and SMTP Diag Tool. For an in-depth review of either product, follow the links below.
Little Snitch
Security & Privacy
Little Snitch is a macOS firewall that monitors outgoing and incoming connections, alerting you to any unexpected activity. It lets you choose to allow or deny connections for improved security and privacy.
networkconnectionsfirewallprivacysecurity
SMTP Diag Tool
Network & Admin
SMTP Diag Tool is a free, open-source Windows application used to diagnose issues with sending and receiving emails. It can test SMTP servers, validate email addresses, verify DNS records, and check for common email delivery problems.
smtpemaildiagnostictroubleshooting
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