Multiple senders per integration are hard to use – no sender selection at send time

[sebastianhochreiter]

Problem

Notifuse allows adding multiple senders to a single email integration (SES, SMTP, etc.).
However, there is currently no way to choose which sender to use when creating or sending a Broadcast or a Transactional notification in the UI.

The sender is only selectable at the Template level (sender_id).
If nothing is set on the template, the system always falls back to the integration’s default sender.

This is unintuitive for most users:

• Users naturally expect to choose the “From” address when creating a campaign or sending a transactional email.
• Having multiple senders in an integration is almost useless if you can only change the sender by editing the template every time.
• The only place where a per-send override currently exists is the Automation Email node (from_override).

Expected behavior

Users should be able to select the sender (from the list defined on the active integration) at the following places:

• When creating / editing a Broadcast
• When sending a Transactional notification from the UI
• (Optionally) as an override when calling the Transactional API

The template-level sender_id can remain as a default, but it should be overridable at send time.

Current workaround

1. Edit the template and change the sender_id before every send, or
2. Create duplicate templates (one per sender).

Both workarounds are cumbersome and error-prone.

Suggestion

Add a simple sender dropdown (populated from the active marketing/transactional integration’s sender list) in the Broadcast and Transactional send UIs.
Keep the template’s sender_id as the default value.