May 2026 - Mailman-users - lists.mailman3.org

captcha for subscription and account registration forms
by Johannes Rohr May 2, 2026

May 2, 2026

Dear all, in mailman installed in venv is there really no canonical way of integrating a captcha into postorius' subscription and account registration forms? We are increasingly getting hammered by spambots, and a captcha would seem like a simple and effective solution. Thanks for any suggestions! Johannes

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An introduction to Dynamic Sublists (Conversations) - GSoC 2026
by Archie Singh May 1, 2026

May 1, 2026

Hello everyone I am Archie Singh, a Computer Science Engineering student from the Indian Institute of Technology (IIT), Jodhpur. I am elated to announce that I have been selected as a contributor for Google Summer of Code 2026. I will be implementing Dynamic Sublists into the Mailman 3 Suite this summer. Mailing lists are essential for broadcasting, but high-traffic lists frequently fill up inboxes with replies to specific topics users might not be interested in. This project transforms this rigid broadcast model into an opt-in thread model. The goal is to ensure only the root email of a new topic is broadcast to the main mailing list. If the topic diverges into a specific task or discussion, subsequent replies will route strictly to a child list, delivering mail only to users who have explicitly opted in via email commands. I would love to hear your thoughts. Would an opt-in thread model be useful for specific topics? How do you folks handle email overloads? I will be updating more on: Blog <https://hashnode.com/@archiesingh> Thank you Regards Archie Singh

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Introducing my GSoC 2026 project: Domain Administration in Postorius
by Khushal A May 1, 2026

May 1, 2026

Hi everyone, I'm Khushal, a final year Computer Science student from R V College of Engineering, India. I've been selected for Google Summer of Code 2026 with GNU Mailman project. I'll be working on Domain Administration in Postorius. Right now, Mailman has roles like site admins and list owners, but domain level management is still limited. The idea of this project is to make the domain owner role actually usable. A domain owner should be able to create lists in their domain, manage those lists with the same permissions as a list owner, and edit domain level settings for their domain. For example, if multiple domains are hosted on the same Mailman instance, each domain can be managed independently by its own owner without needing full admin access. Would love to hear how you currently manage domains and if there are any pain points. I’ll be sharing updates here: https://hashnode.com/@a-khushal Thanks, Khushal (a-khushal)

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