- Announcements - lists.mailman3.com

Email health feature

by Mailman3.com

Dear Mailman3.com users! Starting on July 1, 2026, we are introducing the Email Health feature on all our servers. It provides email deliverability monitoring for your Mailman server. Currently, the feature uses DMARC reports, an industry standard for email deliverability monitoring. Additional data sources are under development. The system collects deliverability data and presents it together with recommended action points and an improvement strategy. For new accounts, onboarding is automatic. Existing accounts can opt in by upgrading to a subscription plan that includes the Email Health feature. Pricing information is available on the page https://mailman3.com/plans.html New IT

July 8, 2026

Experimental branch

by Mailman3.com

Dear Mailman3.com users! All servers have been upgraded to the latest code over the past few days. With the release, we are introducing a new deployment parameter - Experimental branch: https://mailman3.com/experimental.html With our own fork of the Mailman 3 repository, we can ship features to our users even if they have not yet been merged into the upstream codebase. This unblocks a few important improvements we have prepared. Check the page above and reach out to support if you want to enable the Experimental branch for your server. New IT

May 11, 2026

MCP server for HyperKitty

by Mailman3.com

Dear Mailman3.com users! All servers have been upgraded to the latest code over the past few days. Recently, we have published a free and open-source HyperKitty MCP Server, which connects your AI agents to HyperKitty archives: https://gitlab.com/TheNewIT/hyperkitty-mcp Check our MCP servers page: https://mailman3.com/mcp.html New IT

Feb. 16, 2026

Meet Mailman Newsletter

by Mailman3.com

Dear Mailman3.com users! Meet our second companion app - Mailman Newsletter: https://mailman3.com/newsletter.html Mailman Newsletter has been created to improve the user experience of managing announcement and newsletter lists. As part of its design, the app includes an optimized unsubscribe flow that can be used in place of Postorius to provide a convenient way for users to unsubscribe. Check the article "How to maintain unsubscribe flow in a compliant way?" in the Documentation menu of your User's Control Panel. The app is available starting from the Dedicated plan. Reach out to support to have it activated. New IT

Nov. 18, 2025

Meet AI Moderator

by Mailman3.com

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. Along with the update, we are releasing our first companion app for Mailman - AI Moderator: https://mailman3.com/ai-moderator.html This app automates moderator activity for open policy lists that suffer from spam. The app is available starting from the Shared plan. Reach out to support to have it activated. New IT

Oct. 27, 2025

Captcha for the sign-up page

by Mailman3.com

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. It's now possible to activate Google's reCAPTCHA on the Postorius sign-up page to protect the server from spam registrations. Since this option might break GDPR, it's disabled by default. Please reach out to support if you want it to be enabled. New IT

Sept. 1, 2025

New options: moderators' protection from spam and users' default time zone

by Mailman3.com

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. The new version introduces a few new options you can use to improve your experience with Mailman: ✉️ The "Automatic Responses" page of a list settings now has the option "Admin notify held with attachment." It is set to "Yes" by default, which matches Mailman's default behaviour. This behaviour might trigger anti-spam traps in moderator mailboxes due to the attached message. It can now be set to "No" so moderators won't get held messages attached while still getting notifications. ✉️ New users, registered in Postorius, get UTC as their default time zone. This can now be configured to another timezone via a support request. ✉️ For the users of the Dedicated plan, we can now disable username and password-based login completely in favor of SSO or social-based login. New IT

April 28, 2025

Mailman3.com servers upgrade: Postorius/Hyperkitty privacy

by Danil Smirnov

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. It's now possible to fine-tune Postorius/Hyperkitty privacy via the following settings: - "Is Gravatar disabled?" - This setting disables Gravatar usage for user profiles - "Is MBOX export disabled?" - This setting disables the MBOX download feature for archives - "Are public user profiles disabled?" - This setting removes Hyperkitty user profiles from the public All those are set to False by default, if you need them to be True, contact support(a)mailman3.com. In Postorius, we also now offer better CSV export experience for the List Members page: all the data from the members table is now included in the CSV file. New IT

March 17, 2025

Mailman3.com servers upgrade: Postorius improvements

by Danil Smirnov

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. The most noticeable new feature is the Members, Held messages, and Subscription requests indication on the List overview page. Kudos to Bernie Hoeneisen from Ucom Standards Track Solutions GmbH for this great contribution! Another important change is that DMARC mitigation is now enabled by default for new mailing lists, reflecting the status quo in email tech. We also set "Notify owner on bounce increment" to "Yes" by default now to improve informing list owners about unsubscription reasons. Of course, those settings can be reverted to previous defaults when creating a new list. Happy Holiday Season! New IT

Dec. 26, 2024

Mailman3.com servers upgrade: Postorius defaults

by Danil Smirnov

Dear Mailman3.com users! All the servers have been upgraded to the latest code in the last few days. The most noticeable new feature allows the setting of Postorius defaults, i.e. for the Mass-subscribe page: [image: Screenshot 2024-10-13 at 17.47.46.png] This setting is available for our Dedicated plan users, reach out to support <support(a)mailman3.com> if you need it. New IT

Oct. 14, 2024