[T.B.R.] Mailing

[SubSide]

We need to think about how we will tackle mailing in general

Non exhaustive list:

• Signups, confirmation requests, signouts, changes to price, cancellations.
• Mensa state for the pensoc

[Kipjr]

perhaps aligned with the observer trait? If change of Model where user is involved, and this is a significant change (cancel, Signup change etc), then inform the user?

[SubSide]

perhaps aligned with the observer trait? If change of Model where user is involved, and this is a significant change (cancel, Signup change etc), then inform the user?

In general I try to stay away from side effects. In general I rather have fine-grained control per scenario