The emoncms integration in home-assistant which was migrated to config flow last year has new features in the home assistant 2025.8 release
it is now possible to synchronise all the available feeds when creating a new entry. By default, you have to choose the feeds but if you select the second option, everything will be synchronised.
this automatic synchronisation process was requested by @glyn.hudson
Note that if you create new feeds later, you will have to add them manually, using the standard configure process to access the options
The reconfigure flow has been implemented, so you can change IP address and API key if needed 
