- What is your original issue/pain point you want to solve?
It is possible to modify the system notifications described in the documentation but
it is not possible to sign these outgoing emails with smime.
- Which are one or two concrete situations where this problem hurts the most?
All emails send as system notification are not signed. - Why is it not solvable with the Zammad standard?
smime can only be used for customer communication, not for system notifications - What is your expectation/what do you want to achieve?
Every outgoing system message is signeable.