A simple SMTP proxy that bridges legacy software to modern SMTP servers
mailproxy is a simple SMTP proxy. It receives emails through an unencrypted, unauthenticated SMTP interface and retransmits them through a remote SMTP server that requires modern features such as encryption and/or authentication. mailproxy is primarily useful for enabling email functionality in lega
A simple SMTP proxy that bridges legacy software to modern SMTP servers launched on October 9, 2017 with 47 votes, #842 of 3,169 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
A simple SMTP proxy that enables legacy software to communicate with modern SMTP servers. The tool bridges the compatibility gap between older applications and current email infrastructure, allowing them to send mail without modification. It functions as an intermediary between legacy systems and contemporary SMTP servers, making it useful for organizations maintaining older software that cannot natively support modern authentication and encryption standards.
written from the facts on this page · September 2026
From the sources
mailproxy is a simple SMTP proxy. It receives emails through an unencrypted, unauthenticated SMTP interface and retransmits them through a remote SMTP server that requires modern features such as encryption and/or authentication. mailproxy is primarily useful for enabling email functionality in legacy software that only supports plain SMTP. - kz26/mailproxy
Does a similar job
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Source: Show HN post ↗
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