currently Keycloak allows to configure the "from" address per realm which
all emails sent from that particular realm use.
Often a generic address like email@example.com or a realm specific address like
firstname.lastname@example.org is used as "from" address.
It would be nice if one would have more options here like:
1) Use the realm name or a custom string as the display name for the "from" Address
2) Would be great if the admin console would support setting a "reply to" email-address.
3) Would also be helpful if one could configure a dedicated (envelope from) bounce address.
One additional idea is to allow usage of placeholders for the display names, to reuse strings like the realm-display name etc.