From the MailmanHost team
Product updates, migration notes, and practical guidance for running dependable mailing lists.
What actually breaks during a listserv migration
Most migration failures are not technical. They are the small assumptions nobody wrote down, surfacing at 2am.
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Affinity: the moderation queue, explained
Affinity rebuilds the Mailman 3 admin around the one screen list owners live in: the moderation queue.
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Empathy archives: 15 years of email, made searchable
Empathy indexes decades of list traffic so a subscriber can find the one thread they half-remember from 2011.
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DMARC, SPF, and DKIM for mailing lists in 2026
List mail breaks sender alignment by design. Getting delivered in 2026 means handling that on purpose, not by luck.
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Why we run Mailman 3 on dedicated infrastructure
Shared hosting is fine until a neighbor gets your IP blocklisted. For lists, isolation is a deliverability decision.
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Bounce processing without losing subscribers
Aggressive bounce rules shrink your list. Loose ones wreck your reputation. The tuning is the whole game.
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Choosing between shared and dedicated list hosting
The right tier depends on volume, sender reputation needs, and how much moderation your lists actually do.
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