Messages
Write it once, and send it to the people it is for.
Pick who gets it
Everyone, active members, people who stopped coming, one class's attendees, or one location.
In both languages
One message, translated into each language your studio publishes.
See it before it goes
Check who will receive it, and how, before you send.
And who got it
Delivery status per person afterwards, not just “sent”.
Everything a studio runs
If one of the three costs you money, tell us how much.
The first conversation is questions, not a deck.