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SMTP Diag Tool vs Upzilla

A side-by-side look at SMTP Diag Tool and Upzilla. For an in-depth review of either product, follow the links below.

SMTP Diag Tool

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
Upzilla

Upzilla

Development

Upzilla is an open-source crowdsourced alternative to Bugzilla, a defect tracking system. It allows teams to track software bugs and issues during development. Upzilla is web-based, customizable, and offers features like voting, attachments, due dates, and custom fields.

opensourcecrowdsourceddefect-trackingbugzilla-alternativecustomizablevotingattachmentsdue-datescustom-fields