Yes, a little bit. I'm working on a different project that's more of a refreshed Google Groups / GNU Mailman listserv, and that has even more complexity for all

Yes, a little bit. I'm working on a different project that's more of a refreshed Google Groups / GNU Mailman listserv, and that has even more complexity for allow-lists: https://booklet.community https://booklet.community > I imagine it would be easier for the completely self-hosted email system if signup gave receivers a from-address they could whitelist, if their email provider allows it. Maybe you already do this. Yeah, that could be possible. I'm not opposed to releasing a self-hosted version of Postcard - but it's been useful to not have that constraint from the beginning. For instance, email sending happens in an async queue backed by Redis - and that might just be unnecessarily complex for a self-hosted tool!