Email sender selection

Currently, site managers can only configure a single sender for automated emails, even if they have multiple email accounts, such as billing, support, or customer care.

The suggestion is to enhance the Email Editor by allowing site managers to select the email sender for each message.

This way, billing reminder emails can be sent from billing@customer-site.com, while support-related emails can come from support@customer-site.com, and so on.

These accounts should use the same authentication (username and password) as configured in the email sending settings.