https://invoiceninja.github.io/docs/self-host-installation ideally via GIT
https://invoiceninja.github.io/docs/self-host-troubleshooting/ important is to check "php artisan queue:work --stop-when-empty" for mail delivery
https://invoiceninja.github.io/docs/self-host-updating/
https://forum.invoiceninja.com/t/invoice-ninja-v5-updating-debian-git/5… some hints for updating
integrations tips:
integromat.com, n8n.io, zapier.com