Ok great! Sure, every system needs flexibility to allow users to do it just right.
For this one, you could replace [[++emailsender]] code (in the snippet I think, but I didn’t see it there) with the hardcoded email address itself.
Or, you could make your own system settings and then use [[++systemsettingname]] to get the right email, I haven’t done something like this myself, but you can definitely make your own system settings.
This would be more orderly. Imagine you had 3 websites/campaigns/issues or whatever, so you needed three sender emails. You could make system settings like this
campaignoneemail [value] oneemail@1domain
campaigntwoemail [value] twoemail@2domain
campaignthreeemail [value] threeemail@3domain
Then make three containers, and change the setting value for each one to the appropriate setting.
Again, then if you happened to need to change those emails, it would be really easy and your campaigns wouldn’t miss a beat!