postfix/dovecot flow through my veins and I think one just popped imagining it. I may not be getting the end game here.

OP: Do you mean sending DM/PM’s to users at certain instances? This would require each one to have correctly (and strict) aligned SPF/DMARC/DKIM … or a cluster that handles it for them and pushes it via API to the instance.

Admittedly it’s been years, but this thread now has me firing off an updated instance :P

README.md

LibreOffice online: https://www.libreoffice.org/download/libreoffice-online/

Same, just replace docker compose with cloud-init. Gitea runners for deployment.