That's a good question for which I couldn't find an answer on their site. They recommend getting in touch[1] for questions not answered. The lowest plan[2] allows 200 inbound messages per day which even including spam seems sufficiently high for a handful of inboxes.
The HN audience is more likely to be impacted by FOSS mailing lists and so that could be a legitimate concern.
In any case, their key advantage over competitors is not charging by user and allowing unlimited domains.
The HN audience is more likely to be impacted by FOSS mailing lists and so that could be a legitimate concern.
In any case, their key advantage over competitors is not charging by user and allowing unlimited domains.
[1]: https://migadu.com/contact/ [2]: https://migadu.com/pricing/